Student Login

Home›Chapters›Ray Optics PYQs›Reflection & Mirrors›Question 1

MHT CET 2026 (13 Apr, Shift 1) · Reflection & Mirrors

Reflection & Mirrors question from MHT CET 2026 (13 Apr, Shift 1)

Q1MHT CET 2026 · 13 APR · SHIFT 1Easy

Reflection & Mirrors

If a parallel beam of light is incident on spherical mirrors then after reflection they pass through focal point. If F is the focal length and R is the radius of curvature of mirror then

Show answer and solution

Answer: (b)

A parallel beam meets at the principal focus, which lies midway between the pole and the centre of curvature.
$F = \frac{R}{2} \Rightarrow R = 2F$
So the answer is (b) $R = 2F$ .

Report a mistake

More questions on Reflection & Mirrors

In parallax method for the determination of focal length of a concave mirror, the object…JEE Main 2026 (22 Jan, Shift 2)
A concave mirror of focal length 10 cm forms an image which is double the size of object…JEE Main 2026 (6 Apr, Shift 2)
Distance between an object and three times magnified real image is 40 cm. The focal…JEE Main 2026 (24 Jan, Shift 2)
A rod of length 10 cm lies along the principle axis of a concave mirror of focal length…JEE Main 2026 (4 Apr, Shift 1)
A concave mirror of focal length f in air is dipped in a liquid of refractive index μ…JEE Main 2025 (23 Jan, Shift 2)
Two identical objects are placed in front of convex mirror and concave mirror having same…JEE Main 2025 (2 Apr, Shift 2)
Distance between object and its image (magnified by -1/3) is 30 cm. The focal length of…JEE Main 2025 (4 Apr, Shift 1)
The driver sitting inside a parked car is watching vehicles approaching from behind with…JEE Main 2025 (22 Jan, Shift 1)