Work Energy And Power Question 27
Assertion : Power of machine gun is determined by both, the number of bullets fired per second and the kinetic energy of bullets. Reason : Power of any machine is defined as work done (by it) per unit time.
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 are both false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: A
Solution:
K.E. of one bullet = k K.E. of n bullet = nk According to law of conservation of energy, the kinetic energy of bullets is equal to the work done by machine gun per sec.
BETA
