Work Energy And Power Question 22
Question: Assertion : Graph between potential energy of a spring versus the extension or compression of the spring is a straight line. Reason : Potential energy of a stretched or compressed spring, proportional to square of extension or compression.
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: E
Solution:
Potential energy $ U=\frac{1}{2}kx^{2} $ i.e. $ U\propto x^{2} $
This is a equation of parabola, so graph between U and x is a parabola, not straight line.
