\( \mathrm{N} \) atoms of a radioactive element emit \( \mathrm{n} ...

Channel:
PW Solutions
Subscribers:
447,000
Published on ● Video Link: https://www.youtube.com/watch?v=ptdyHdt8Z7w


Duration: 2:31
2 views
0

\( \mathrm{N} \) atoms of a radioactive element emit \( \mathrm{n} \) alpha particles per second at an instant. Then the half \( - \) life of the element is
(A) \( \frac{\mathrm{n}}{\mathrm{N}} \sec \).
(B) \( 1.44 \frac{\mathrm{n}}{\mathrm{N}} \) sec.
(C) \( 0.69 \frac{\mathrm{n}}{\mathrm{N}} \mathrm{sec} \).
(D) \( 0.69 \frac{\mathrm{N}}{\mathrm{n}} \mathrm{sec} \).
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2023-02-14Let \( E \) denote the parabola \( y^{2}=8 x \). Let \( P=(-2,4) \)...
2023-02-14At constant volume, temperature is increased. Then [CBSE PMT 1993; ...
2023-02-14At time \( \mathrm{t}=0 \), some radioactive gas is injected into a...
2023-02-14Short distance transport of substances like nutrients, water, etc., in plants occurs through (a)...
2023-02-14If \( (3 \sin \alpha, 2 \cos \alpha) \) lies on the same side as th...
2023-02-14Hormone that stimulates \( \mathrm{Ca}^{2+} \) reabsorption by rena...
2023-02-14If radii of director circles of \( \frac{x^{2}}{a^{2}}+\frac{y^{2}}...
2023-02-14The thymus gland secretes the peptide hormones called (a) antibodie...
2023-02-14Two identical samples (same material and same amount initially) \( ...
2023-02-14A sample of radioactive material has mass \( \mathrm{m} \), decay c...
2023-02-14\( \mathrm{N} \) atoms of a radioactive element emit \( \mathrm{n} ...
2023-02-14The sum of lengths of perpendiculars drawn from focii to any real t...
2023-02-14A charged capacitor of capacitance \( \mathrm{C} \) is discharged t...
2023-02-14The root mean square velocity of the molecules in a sample of heliu...
2023-02-14Speed of sound in a gas is \( v \) and r.m.s. velocity of the gas m...
2023-02-14Match the following columns. \begin{tabular}{llll} \hline & Column-I & & Column-II \\ \hline A. ...
2023-02-14If the oxygen \( \left(\mathrm{O}_{2}\right) \) has root mean squar...
2023-02-14\( \mathrm{PTH} \) is a (a) hypercalcemic hormone (b) hypocalcemic ...
2023-02-14The curve between absolute temperature and \( v_{r m s}^{2} \) is [...
2023-02-14Match the column-I of properties with column-II of reactions Column...
2023-02-14Three closed vessels \( A, B \) and \( C \) are at the same tempera...


Tags:
pw