NEET Physics Optical Instruments Assertion Reason Question
Assertion (A): The focal length of a convex lens in contact with a concave lens can result in a diverging lens system. | Reason (R): The focal lengths of lenses in contact add algebraically.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
The context mentions the focal length of a convex lens (30 cm) and a concave lens (20 cm) in contact, resulting in a diverging lens system. The reason is that focal lengths add algebraically, confirming both statements.
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