| 2024-09-24 | An ac circuit consists of a series combination of circuit elements X and Y. The current is ahead.... | 0:00 | 0 | |
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| 2024-09-24 | The radius of the \\(\\mathrm{n}^{\\text {th }}\\) orbit in Bohr model of hydrogen atom is propo.... | 0:00 | 1 | |
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| 2024-09-24 | In a Young's double-slit experiment, the fringe width is found to be \\(\\beta\\). If the entire.... | 0:00 | 3 | |
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| 2024-09-24 | Electrostatics deals with the study of forces, fields and potentials arising from static charges.... | 0:00 | 7 | |
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| 2024-09-24 | (a) What do you understand by ‘sharpness of resonance’ for a series LCR resonant cir.... | 0:00 | 2 | |
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| 2024-09-24 | (a) Using the ray diagram for a system of two lenses of focal lengths f1 and f2 in contact with .... | 0:00 | 7 | |
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| 2024-09-24 | Draw the energy band diagram of (i) n-type, and (ii) p-type semiconductors at temperature T >.... | 0:00 | 6 | |
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| 2024-09-24 | Explain the working principle of an optical fibre with the help of a diagram. Mention one use of.... | 0:00 | 1 | |
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| 2024-09-24 | Why is the electrostatic potential inside a charged conducting shell constant throughout the vol.... | 0:00 | 0 | |
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| 2024-09-24 | Write the functions of transducer and repeaters..... | 0:00 | 1 | |
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| 2024-09-24 | If \\(y=x|x|\\), find \\(\\frac{d y}{d x}\\) for \\(x<0\\)..... | 0:00 | 0 | |
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| 2024-09-24 | If y = (sec–1x)2, x > 0,, show thatx2x2-1d2ydx2+2x3-xdydx-2=0.... | 0:00 | 5 | |
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| 2024-09-24 | A coin is tossed 5 times. Find the probability of getting (i) at least 4 heads, and (ii) at most.... | 0:00 | 3 | |
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| 2024-09-24 | Define electrical conductivity of a wire. Give its SI unit..... | 0:00 | 2 | |
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| 2024-09-24 | How are eddy currents generated in a conductor which is subjected to a magnetic field?.... | 0:00 | 2 | |
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| 2024-09-24 | If \\(f(x)=\\frac{4 x+3}{6 x-4}, x \\neq \\frac{2}{3}\\), show that \\(f \\circ f(x)=x\\) for al.... | 0:00 | 0 | |
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| 2024-09-24 | Find the general solution of the differential equation \\(\\log \\left(\\frac{d y}{d x}\\right)=.... | 0:00 | 3 | |
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| 2024-09-24 | Solve the following differential equation :dydx+y=cosx-sinx.... | 0:00 | 2 | |
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| 2024-09-24 | Show that the vectors \\(\\hat{i}-2 \\hat{j}+3 \\hat{k},-2 \\hat{i}+3 \\hat{j}-4 \\hat{k}\\) and.... | 0:00 | 0 | |
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| 2024-09-24 | A series LCR circuit with \\(\\mathrm{R}=20 \\Omega, \\mathrm{L}=2 \\mathrm{H}\\) and \\(\\mathr.... | 0:00 | 1 | |
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| 2024-09-24 | Out of 8 outstanding students of a school, in which there are 3 boys and 5 girls, a team of 4 st.... | 0:00 | 4 | |
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| 2024-09-24 | Find:∫dx5-4x-2x2.... | 0:00 | 1 | |
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| 2024-09-24 | Differentiate \\(\\tan ^{-1} \\frac{3 x-x^3}{1-3 x^2},|x|<\\frac{1}{\\sqrt{3}}\\) w.r.t. \\(\.... | 0:00 | 1 | |
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| 2024-09-24 | Find whether the function \\(f(x)=\\cos \\left(2 x+\\frac{\\pi}{4}\\right)\\); is increasing or .... | 0:00 | 3 | |
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| 2024-09-24 | Find the length of the intercept, cut off by the plane 2x + y – z = 5 on the x-axis..... | 0:00 | 1 | |
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| 2024-09-24 | The electromagnetic waves used in radar systems are :.... | 0:00 | 4 | |
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| 2024-09-24 | If \\(|\\vec{a}|=2,|\\vec{b}|=7\\) and \\(\\vec{a} \\times \\vec{b}=3 \\hat{i}+2 \\hat{j}+6 \\ha.... | 0:00 | 5 | |
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| 2024-09-24 | Find the coordinates of the point where the line joining the points \\((3,-4,-5)\\) and \\((2,-3.... | 0:00 | 4 | |
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| 2024-09-24 | If \\(\\frac{\\mathrm{d}}{\\mathrm{d} x}[\\mathrm{~F}(x)]=\\frac{\\sec ^4 x}{\\operatorname{cose.... | 0:00 | 5 | |
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| 2024-09-24 | Find the particular solution of the differential equation:\\[x \\frac{d y}{d x} \\sin \\left(\\f.... | 0:00 | 2 | |
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| 2024-09-24 | If \\(y =\\left(\\sin ^{-1} x\\right)^2\\), prove that \\(\\left(1-x^2\\right) \\frac{ d ^2 y }{.... | 0:00 | 2 | |
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| 2024-09-24 | Why is ground wave transmission of signals restricted to a frequency of 1500 kHz ?.... | 0:00 | 1 | |
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| 2024-09-24 | If \\(A\\) is a square matrix satisfying \\(A^{\\prime} A=I\\), write the value of \\(|A|\\)..... | 0:00 | 0 | |
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| 2024-09-24 | A tank with rectangular base and rectangular sides, open at the top is to be constructed so that.... | 0:00 | 8 | |
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| 2024-09-24 | In a diffraction pattern due to a single slit, how will the angular width of central maximum cha.... | 0:00 | 6 | |
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| 2024-09-24 | If \\(x^p y^q=(x+y)^{p+q}\\), prove that \\(\\frac{d y}{d x}=\\frac{y}{x}\\) and \\(\\frac{d^2 y.... | 0:00 | 3 | |
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| 2024-09-24 | Prove that \\(\\int_0^{ a } f (x) d x=\\int_0^{ a } f ( a -x) d x\\), hence evaluate \\(\\int_0^.... | 0:00 | 0 | |
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| 2024-09-24 | Show that the function \\(f\\) in \\(A=R-\\left\\{\\frac{2}{3}\\right\\}\\) defined as \\(f(x)=\.... | 0:00 | 0 | |
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| 2024-09-24 | Find the vector equation of the line passing through \\((2,1,-1)\\) and parallel to the line \\(.... | 0:00 | 0 | |
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| 2024-09-24 | Give two differences between ideal and non-ideal solutions..... | 0:00 | 7 | |
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| 2024-09-24 | In a fission event of \\({ }_{92}^{238} \\mathrm{U}\\) by fast moving neutrons, no neutrons are .... | 0:00 | 2 | |
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| 2024-09-24 | Find the order and the degree of the differential equation \\(x^2 \\frac{d^2 y}{d x^2}=\\left\\{.... | 0:00 | 1 | |
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| 2024-09-24 | If \\(\\vec{a}=2 \\hat{i}+2 \\hat{j}+3 \\hat{k}, \\vec{b}=-\\hat{i}+2 \\hat{j}+\\hat{k}\\) and \.... | 0:00 | 11 | |
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| 2024-09-24 | If \\(f (x)=x+1\\), find \\(\\frac{ d }{ d x}(\\) fof \\()(x)\\)..... | 0:00 | 0 | |
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| 2024-09-24 | Find the vector equation of the plane that contains the lines \\(\\vec{r}=(\\hat{i}+\\hat{j})+\\.... | 0:00 | 3 | |
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| 2024-09-24 | If \\(\\vec{a}=\\hat{i}+\\hat{j}+\\hat{k}, \\vec{a} \\cdot \\vec{b}=1\\) and \\(\\vec{a} \\times.... | 0:00 | 0 | |
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| 2024-09-24 | In Bohr's model of hydrogen atom, the total energy of the electron in nth  discrete orbit i.... | 0:00 | 7 | |
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| 2024-09-24 | Find the particular solution of the differential equation \\(x \\frac{ dy }{ d x}- y =x^2 \\cdot.... | 0:00 | 1 | |
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| 2024-09-24 | A box \\(B_1\\) contains 1 white ball and 3 red balls. Another box \\(B_2\\) contains 2 white ba.... | 0:00 | 0 | |
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| 2024-09-24 | Find the general solution of the differential equation \\(x \\frac{ dy }{ d x}= y (\\log y -\\lo.... | 0:00 | 0 | |
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| 2024-09-24 | If \\(x^y-y^x=a^b\\), find \\(\\frac{d y}{d x}\\)..... | 0:00 | 1 | |
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| 2024-09-24 | Write the reactions involved in the following :\nGabriel phthalimide synthesis.... | 0:00 | 2 | |
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| 2024-09-24 | Explain the principle and working of a moving coil galvanometer..... | 0:00 | 0 | |
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| 2024-09-24 | Find : \\(\\int \\frac{ d x}{x^2-6 x+13}\\).... | 0:00 | 0 | |
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| 2024-09-24 | Find: \\(\\int \\frac{x^2+x+1}{(x+1)\\left(x^2+4\\right)} d x\\).... | 0:00 | 1 | |
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| 2024-09-24 | Two cards are drawn successively with replacement from a well shuffled pack of 52 cards. Find th.... | 0:00 | 1 | |
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| 2024-09-24 | (a) Find : \\(\\int \\frac{1}{\\sqrt{12+4 x-x^2}} d x\\)OR(b) Find : \\(\\int \\frac{ xe ^{ x }}.... | 0:00 | 1 | |
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| 2024-09-24 | \"Forests provide intangible benefits to us.\" Explain by taking three different areas, how..... | 0:00 | 0 | |
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| 2024-09-24 | (a) Give reasons :\n(i) Helium does not form compounds like Xenon.\n(ii) HClO4 is a stronger aci.... | 0:00 | 2 | |
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| 2024-09-24 | A patient complains of suffering from constipation, stomach ache, stool with blood clots and exc.... | 0:00 | 0 | |
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| 2024-09-24 | Give reasons for the following :\n\\(\\alpha\\)-hydrogens of aldehydes and ketones are acidic in.... | 0:00 | 1 | |
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| 2024-09-24 | Find the equation of the plane passing through the line of intersection of the planes \\(\\vec{r.... | 0:00 | 2 | |
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| 2024-09-24 | Identify electromagnetic waves which :affect a photographic plate..... | 0:00 | 2 | |
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| 2024-09-24 | A thin equiconvex lens of radius of curvature \\(R\\) made of material of refractive index \\(\\.... | 0:00 | 8 | |
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| 2024-09-24 | (a) Write the structures of A and B in the following reactions :\n(i) C6H5 N2+Cl-→CuCN.... | 0:00 | 2 | |
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| 2024-09-24 | (a) Calculate the energy and momentum of a photon in a monochromatic beam of wavelength \\(331.5.... | 0:00 | 1 | |
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| 2024-09-24 | Explain with the help of a suitable diagram, the phenomenon on which an optical fibre works. Men.... | 0:00 | 2 | |
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| 2024-09-24 | If \\(\\vec{a}\\) and \\(\\vec{b}\\) are two vectors such that \\(|\\vec{a}+\\vec{b}|=|\\vec{b}|.... | 0:00 | 13 | |
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| 2024-09-24 | A plano convex lens is made of glass of refractive index 1.5. The radius of curvature of the con.... | 0:00 | 5 | |
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| 2024-09-24 | Answer the following, giving reason :(a) The resistance of a p-n junction is low when it i.... | 0:00 | 3 | |
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| 2024-09-24 | Using integration, find the area of region bounded by line \\(\\mathrm{y}=\\sqrt{3} x\\), the cu.... | 0:00 | 2 | |
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| 2024-09-24 | (a) Derive the expression for the force acting per unit length between two long straight paralle.... | 0:00 | 6 | |
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| 2024-09-24 | What is meant by energy band gap in a solid? Draw the energy band diagrams for a conductor, an i.... | 0:00 | 1 | |
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| 2024-09-24 | Find the direction cosines of a line whose cartesian equation is given as \\(3 x+1=6 y-2=1-z\\)..... | 0:00 | 4 | |
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| 2024-09-24 | (i) Write the wavelength range of the following electromagnetic radiation :\nGamma-rays, Microwa.... | 0:00 | 4 | |
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| 2024-09-24 | Define the terms 'distance of closest approach' and 'impact parameter'..... | 0:00 | 0 | |
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| 2024-09-24 | If \\(\\theta\\) is the angle between two vectors \\(\\vec{a}\\) and \\(\\vec{b}\\), then \\(\\v.... | 0:00 | 5 | |
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| 2024-09-24 | (a) Explain briefly the fact that electromagnetic waves carry energy.\n(b) Why do we not feel th.... | 0:00 | 0 | |
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| 2024-09-24 | (a) Using the necessary ray diagram, derive the mirror formula for a concave mirror.\n(b) In the.... | 0:00 | 2 | |
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| 2024-09-24 | Find the area of the region \\(\\left\\{(x, y): x^2 \\leq y \\leq x+2\\right\\}\\), using integr.... | 0:00 | 2 | |
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| 2024-09-24 | How does an oscillating charge radiate an electromagnetic wave ? Give the relation between the f.... | 0:00 | 3 | |
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| 2024-09-24 | A photocell connected in an electrical circuit is placed at a distance 'd' from a source of ligh.... | 0:00 | 8 | |
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| 2024-09-24 | An octagonal prism is a three-dimensional polyhedron bounded by two octagonal bases and eight re.... | 0:00 | 1 | |
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| 2024-09-24 | In Young's double slit experiment, the separation between the two slits is halved. The new fring.... | 0:00 | 4 | |
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| 2024-09-24 | Out of red, blue and yellow lights, the scattering of__________light is maximum..... | 0:00 | 0 | |
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| 2024-09-24 | Write the IUPAC name of the following complex :\n\\[\\left[\\mathrm{Co}\\left(\\mathrm{NH}_3\\ri.... | 0:00 | 3 | |
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| 2024-09-24 | In an ac circuit, the applied voltage and flowing current are E=E0sinωt and \\(I\\)=I0sin&.... | 0:00 | 2 | |
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| 2024-09-24 | A cell of internal resistance r connected across an external resistance R can supply maximum cur.... | 0:00 | 1 | |
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| 2024-09-24 | Evaluate:\\[\\int_0^\\pi \\frac{x \\tan x}{\\sec x+\\tan x} d x\\].... | 0:00 | 5 | |
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| 2024-09-24 | An astronomical telescope uses two lenses of powers \\(10 \\mathrm{D}\\) and \\(1 \\mathrm{D}\\).... | 0:00 | 0 | |
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| 2024-09-24 | {"english":"If \\(y^2 \\cos \\left(\\frac{1}{x}\\right)=a^2\\), then find \\(\\frac{d y}{d x}\\).... | 0:00 | 3 | |
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| 2024-09-24 | Account for the following :\n(i) Transition metals generally form coloured compounds.\n(ii.... | 0:00 | 2 | |
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| 2024-09-24 | (a) Use Gauss's law to show that due to a uniformly charged spherical shell of radius R, the ele.... | 0:00 | 3 | |
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| 2024-09-24 | (a) Draw circuit diagram and explain the working of a zener diode as a dc voltage regulator with.... | 0:00 | 3 | |
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| 2024-09-24 | The inward and the outward electric flux through a Gaussian surface are \\(2 \\phi\\) and \\(\\p.... | 0:00 | 11 | |
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| 2024-09-24 | A magnetic needle becomes vertical at the magnetic pole of the earth. Explain why..... | 0:00 | 3 | |
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| 2024-09-24 | Find the particular solution of the differential equation \\(\\frac{d y}{d x}+y \\cot x=2 x+x^2 .... | 0:00 | 2 | |
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| 2024-09-24 | How can you differentiate whether a pattern is produced by a single slit or double slits ? Deriv.... | 0:00 | 2 | |
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| 2024-09-24 | At equilibrium, in a p-n junction diode the net current is:.... | 0:00 | 1 | |
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| 2024-09-24 | If \\(\\cos (x y)=k\\), where \\(k\\) is a constant and \\(x y \\neq n \\pi, n \\in Z\\), then \.... | 0:00 | 1 | |
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