The mirror of length \( L \) moves horizontally as shown in the figure-5.329 with a velocity \( ... VIDEO
The mirror of length \( L \) moves horizontally as shown in the figure-5.329 with a velocity \( v \). The mirror is illuminated by a point source of light \( P \) placed on the ground. The rate at which the length of the light spot on the ground increases is :https://bit.ly/YTAI_PWAP https://www.pw.live
Other Videos By PW Solutions 2022-11-28 pUse \( \pi=\frac{22}{7} \), unless stated otherwise./ppThree semicircles each of diameter \( 3 ... 2022-11-28 A block of weight \( 100 \mathrm{~N} \) is lying on a rough horizontal surface. If coefficient o... 2022-11-28 Two cells \( A \) and \( B \) of e.m.f. \( 2 \mathrm{~V} \) and \( 1.5 \mathrm{~V} \) respective... 2022-11-28 A player throws a ball upwards with an initial speed of \( 30 \mathrm{~m} \mathrm{~s}^{-1} \). H... 2022-11-28 A square \( A B C D \) of side \( 1 \mathrm{~mm} \) is kept at distance \( 15 \mathrm{~cm} \) in... 2022-11-28 The potential energy of a particle varies with distance \( x \) from a fixed origin as \( U=\fra... 2022-11-28 A rectangular lawn, \( 75 \mathrm{~m} \) by \( 60 \mathrm{~m} \), has two roads, each road \( 4 ... 2022-11-28 Work done by force of kinetic friction on the system.
(A) must be zero
(B) must be positive
(C) ... 2022-11-28 Two spheres of masses \( 64 \mathrm{~kg} \) and \( 298 \mathrm{~kg} \) are placed a distance \( ... 2022-11-28 A uniform rod of length \( 1 \mathrm{~m} \) and mass \( 4 \mathrm{~kg} \) is supported on two kn... 2022-11-28 The mirror of length \( L \) moves horizontally as shown in the figure-5.329 with a velocity \( ... 2022-11-28 A cylindrical vessel of diameter \( 12 \mathrm{~cm} \) contains \( 800 \pi \mathrm{cm}^{3} \) of... 2022-11-28 Point out the wrong statement :-
(1) Phenacetin is a very important antibiotic
(2) Penicillin wa... 2022-11-28 A line passes through the point whose position vectors are i→+j→-2k→ and i→-... 2022-11-28 In the circuit shown, the resistance is a variable resistance. If for \( r=f R \), the heat gene... 2022-11-28 If the length of a median of an equilateral triangle is \( x \mathrm{~cm} \), then its area, is
... 2022-11-28 A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction w... 2022-11-28 pIn igneous and metamorphic rocks, minerals may occur in the ............../pp(i) Cracks/pp(ii) ... 2022-11-28 Equal masses of \( \mathrm{H}_{2}, \mathrm{O}_{2} \) and methane have been taken in a container ... 2022-11-28 Which of the following molecule has no dative bond?
(1) \( \mathrm{CO} \)
(2) \( \mathrm{CO}_{3}... 2022-11-28 For the non-zero values of force of attraction between gas molecules, gas equation will be :
(1)...
0