Physics-(general)
NEET Physics (general) Assertion Reason Question
Type: Assertion Reason-assertion-Easy-Class 12
Assertion (A): The focal length of a convex lens is positive. | Reason (R): For a convex lens, the image distance is always positive.
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 C
Detailed Explanation
According to the Cartesian sign convention, the focal length of a convex lens is positive. However, the image distance can be positive or negative depending on the position and nature of the image formed.
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