Dual Nature Of Light Question 516
Question: The potential difference applied to an X-ray tube is 5kV and the current through it is 3.2 mA. Then the number of electrons striking the target per second is [IIT-JEE (Screening) 2002]
Options:
A) $ 2\times 10^{16} $
B) $ 5\times 10^{16} $
C) $ 1\times 10^{17} $
D) $ 4\times 10^{15} $
Show Answer
Answer:
Correct Answer: A
Solution:
$ i=\frac{Ne}{t},\Rightarrow ,\frac{N}{t}=\frac{i}{e}=\frac{3.2\times {{10}^{-3}}}{1.6\times {{10}^{-19}}}=2\times 10^{16}/sec $
BETA
