Physics-Mirrors

NEET Physics Mirrors MCQ Question

Type: MCQ-numerical-Hard-Class 12

A concave mirror has a focal length of 20 cm. If an object is placed 30 cm from the pole of the mirror, what is the nature and position of the image formed?

A

Real, inverted, 60 cm from the mirror

B

Virtual, upright, 60 cm from the mirror

C

Real, inverted, 12 cm from the mirror

D

Virtual, upright, 12 cm from the mirror

Correct Answer

Option A

Detailed Explanation

Using the mirror formula 1f=1v+1u\frac{1}{f} = \frac{1}{v} + \frac{1}{u} where f=20f = -20 cm and u=30u = -30 cm, we find v=60v = -60 cm. This indicates a real, inverted image 60 cm from the mirror.

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