MEDIUM
12th West Bengal Board
IMPORTANT
Earn 100

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.

Important Questions on Reflection of Light

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.
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 20
An object is placed at right angles to the principal axis of a concave mirror of focal length 25 cm and the image is formed in front the mirror at a distance of 100 cm from the mirror. Find the position of the object and the magnification of the image.
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 21
The focal length of a concave mirror is f. If an object is placed at a distance x from the principal focus and away from the mirror, what would be the magnification of the image? For what value of x the size of the image will be equal to that of the object?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 22
A spherical mirror is placed against the wall of room 25 ft long, an illuminated object is placed 11 ft in front of the mirror. What should be the type and focal length of the mirror in order that an image of the object may be formed on the opposite wall ?
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 1
The floor of a room ABCD is rectangular in shape. The side AB and CD are 12 m long and the other side are 16 m long. The wall AB and CD have two plane mirrors facing each other. A man stands at the middle of the side facing the wall AB. The first image of side AB seen through the mirror fixed on AB just fills the mirror. Find the width of the mirror.
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 4
A luminous point A is inside a circular track. A ray emerges from A and after two reflections at the circle returns to A. If α be the angle of incidence, x the distance from the centre of the circle to A and Y the distance of the centre from the point D, where the ray in its course crosses the diameter through A, prove that tan α=x-yx+y.
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 12 - Reflection of Light>EXERCISE 12>Q 5
Two plane mirrors are placed at an angle θ, so that a ray parallel to one mirror gets reflected parallel to second mirror after two consecutive reflections. The value of θ will be