Physics-SI Units

NEET Physics SI Units Assertion Reason Question

Type: Assertion Reason-assertion-Easy-Class 11

Assertion (A): In the SI system, the unit of solid angle is the steradian (sr). | Reason (R): Solid angle is defined as the ratio of the intercepted area of a spherical surface to the square of its radius.

A

Both A and R are true, and R is the correct explanation of A.

B

Both A and R are true, but R is not the correct explanation of A.

C

A is true, but R is false.

D

A is false.

Correct Answer

Option A

Detailed Explanation

Both the assertion and the reason are correct. The SI unit of solid angle is the steradian (sr), and it is defined by the ratio of the intercepted area to the square of its radius.

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