EASY
12th West Bengal Board
IMPORTANT
Earn 100

A man stands at the centre of a room. A plane mirror hangs in the wall in front of him. What should be the minimum height of the mirror through which the man can see the full image of the wall behind. The height of the wall is 4.2 m.

Important Questions on Reflection of Light

MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 7
How many images of himself can an observer see in a room whose ceiling and two adjacent walls are mirrors ?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 8
If a man runs at the rate of 5 cm/sec towards a mirror, at what rate will he approach his image formed by the mirror ?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 9
A man is running towards a plane mirror with a velocity v in a direction making an angle θ with the normal to the mirror. Find the magnitude and direction of the velocity of his image relative to the man.
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 10
Two plane mirrors inclined to each other form images of an object placed between them. Prove that the object and its images will lie on the circumference of a circle.
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 11
A ray is so incident on a plane mirror that the incident ray and its reflected ray subtend an angle of 20° between them. If the mirror is now rotated through 15°, what are the possible angles between the incident ray and the new reflected ray ?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 12
Two plane mirrors are inclined to each other at 90°. A ray of light is successively reflected by the mirrors. Show that the incident the ray and the reflected ray after second reflection are parallel to each other. 
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 13

A concave mirror forms an erect image of an object three times magnified. The radius of curvature of the mirror is 36 cm. What is the position of the object?

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 14
The magnification of an image formed by a convex mirror is 1p. Calculate the object distance if the focal length of the mirror be f.