Work Energy And Power Question 26
Question: Assertion : In case of bullet fired from gun, the ratio of kinetic energy of gun and bullet is equal to ratio of mass of bullet and gun. Reason : In firing, momentum is conserved.
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: A
Solution:
$ E=\frac{P^{2}}{2m} $ . In firing momentum is conserved
$ \therefore \ E\propto \frac{1}{m} $ So $ \frac{{E _{gun}}}{{E _{bullet}}}=\frac{{m _{bullet}}}{{m _{gun}}} $
