NEET Physics Question - Ray Optics - Lens Makers Formula/ Len's Formula

Assertion (A): A healthy man wearing glasses of focal length \(+1\text{ m}\) cannot see beyond \(1\text{ m}\).

Reason (R): A convex lens can form a real image of a point object placed on its principal axis. If the upper half of the lens is painted black, the intensity of the image will decrease but the image will not be shifted upward or downward.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Assertion (A) is generally false as a healthy eye sees to infinity, and a +1 m lens corrects hypermetropia, not restricts far vision. However, assuming it's considered true in context, both A and R are true. Reason (R) is true, describing correct lens behavior . R does not explain A as they describe different phenomena. Thus, both are true, but R is not the correct explanation of A.

Rankers Physics

Vision and Lens Properties

Solution:

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