Question

The following questions consist of two statements - Assertion (A) and Reason (R). Answer these
questions selecting the appropriate option given below:
(a) Both A and R are true and R is the correct explanation of A.
Both A and R are true and R is not the correct explanation of A.
A is true but R is false.
A is false but R is true
Assertion (A): The potential energy of a body may be negative.
Reason(R): The potential energy of a body depends on the reference level chosen.
(ii) Assertion (A): The bob of a pendulum while crossing mean position has minimum potential
energy. This minimum P.E is non-zero.
Reason(R) : In mean position, the position of the bob is at rest and hence the net force
experienced by the particle is zero. Thus, P.E is zero at meari position.
(iii) Assertion (A): The velocity of sound increases with increase in humidity.
Reason (R): Velocity of sound does not depend upon the medium.​

Answer 1

Answer:

a is true r is false ok this is answer

Answer 2

Assertion is true but reason is false.

Option (3) is correct

Explanation:

Assertion (A): The velocity of sound increases with increase in humidity.

Reason (R): Velocity of sound does not depend upon the medium.​

Options:

1. If both the assertion and reason are true and reason is a true explanation of the assertion.
2. if both the assertion and reason are true but the reason is not the correct explanation of assertion.
3. If the assertion is true but reason is false.
4. If both the assertion and reason are false.

Assertion is true but reason is false.