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

Assertion (A): Paraxial rays are always parallel to the principal axis.

Reason (R): A parallel beam parallel to principal axis converges at the focal point.

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 false; paraxial rays are simply close to the axis, not necessarily parallel. Reason (R) is also false because due to spherical aberration, a real parallel beam does not perfectly converge to a single focal point.

Rankers Physics

Paraxial Rays and Focal Point Definition

Solution:

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