Practice Reflection of Light MCQ questions with answers to strengthen your understanding of this important Physics topic. This page includes useful practice questions, previous year questions, correct answers, and explanations to help you prepare for Railway Recruitment Board examinations.
Reflection of light occurs when light rays strike a surface and return to the same medium. Important concepts in this chapter include the laws of reflection, reflection from plane mirrors, image formation, and reflection from spherical mirrors. Understanding these concepts will help you solve conceptual and numerical questions in competitive examinations.
Start practicing Reflection of Light MCQs with answers and explanations to improve your Physics knowledge and prepare for Railway exams.
31
A real, inverted image forms 30 cm in front of a concave mirror when the object is 60 cm from it. What is the focal length?
RRB Group-D
21/08/2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:A-20 cm
1/f = 1/(-60) + 1/(-30) = -1/20, giving f = -20 cm.
32
A convex mirror has a focal length of 20 cm. If an object is placed 40 cm from the mirror, what will be the nature and relative size of the image?
RRB Group-D
05/08/2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:DVirtual, smaller than the object
Using f = +20 cm and u = -40 cm gives v = +13.33 cm and m = +1/3. The image is virtual, erect and diminished.
33
Where must a face be placed relative to a concave shaving mirror to obtain a large, upright image?
RRB Group-D
04/08/2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:CBetween the pole and focus
An object inside the focal length of a concave mirror forms a virtual, upright and magnified image.
34
An object is placed at the centre of curvature of a concave mirror. If the mirror is partially covered with an opaque material, what change will occur in the image?
RRB Group-D
10/08/2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:AThe image will remain at the same position but become less bright
Covering part of the mirror reduces the light forming the image but does not change the mirror's focal length or image distance. The complete image remains, with reduced brightness.
35
A candle is placed between the centre of curvature and principal focus of a concave mirror. What image is formed?
RRB Group-D
05/08/2026 (4:30 PM - 6:00 PM)
2026
✓ Answer:AReal, inverted and enlarged beyond the centre of curvature
An object between F and C forms a real, inverted and enlarged image beyond C.
36
An object is 20 cm from a concave mirror of focal length 10 cm. What is the image distance?
RRB Group-D
20/08/2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:B20 cm in front of the mirror
The object is at the centre of curvature, 2f from the pole, so the real image forms there too: 20 cm in front.
37
An object is 18 cm from a converging lens of focal length 12 cm. Its image is real. What is the magnification?
RRB Group-D
03/08/2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:A-2
For a lens, 1/f = 1/v - 1/u. With f = +12 cm and u = -18 cm, v = +36 cm. Hence m = v/u = -2.
38
A convex lens forms a real, inverted image three times the size of an object placed 30 cm from it. What is the approximate lens power?
RRB Group-D
11/08/2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:A+4.44 D
m = -3 and u = -30 cm give v = +90 cm. Then 1/f = 1/90 + 1/30 = 2/45, so f = 22.5 cm = 0.225 m. P = 1/f ≈ +4.44 D.
39
Where should an object be placed relative to a convex lens to project a magnified real image onto a screen?
RRB Group-D
18/08/2026 (12:45 PM - 2:15 PM)
2026
✓ Answer:ABetween the focus and twice the focal length
An object between F and 2F forms a real, inverted and enlarged image beyond 2F.
40
A candle is 25 cm from a convex lens of focal length 15 cm and forms a real image. What is the magnification?
RRB Group-D
04/08/2026 (9:00 AM - 10:30 AM)
2026
✓ Answer:A-1.5
1/v = 1/15 - 1/25 = 2/75 gives v = 37.5 cm. Magnification m = v/u = 37.5/(-25) = -1.5.
Our collection of Reflection of Light questions and answers is designed to help you revise key concepts, test your knowledge, and improve your accuracy. Practicing MCQs regularly can also help you identify important formulas and understand the types of questions asked in previous Railway exams.
Whether you are preparing for RRB NTPC Reflection of Light PYQ, RRB Group D Reflection of Light PYQ, RRB JE Reflection of Light PYQ, RRB ALP Reflection of Light PYQ, or RRB Technician Reflection of Light PYQ, these questions can support your Physics preparation. The practice material is also useful for students looking for general Physics MCQs and Railway exam questions.
Topics Covered
Nature of Light
Laws of Reflection
Reflection from Plane Mirrors
Image Formation by Plane Mirrors
Reflection from Spherical Mirrors
Concave and Convex Mirrors
Mirror Formula and Magnification
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