EASY
10th CBSE
IMPORTANT
Earn 100

Focal length of a convex mirror is 25 cm. What is its radius of curvature?

Important Questions on Light : Reflection and Refraction

EASY
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 1 - Light : Reflection and Refraction>Practice Problems-I>Q 2
Radius of curvature of a concave mirror is 100 cm. What is its focal length?
MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 1 - Light : Reflection and Refraction>Practice Problems-I>Q 3
An object 4.0 cm high is placed at a distance of 40.0 cm in front of a concave mirror of focal length 20.0 cm. Find the distance from the mirror, at which a screen be placed in order to obtain a sharp images. Also find the size and nature of the image formed.
MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 1 - Light : Reflection and Refraction>Practice Problems-I>Q 4
An object 5.0 cm high is placed at 25.0 cm in front of a concave mirror of focal length 15.0 cm. Find the distance from the mirror, at which a screen should be placed in order to obtain a sharp image. Also find the size and nature of the image formed.
MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 1 - Light : Reflection and Refraction>Practice Problems-I>Q 5
An object is kept in front of a concave mirror of focal length 30 cm. The image formed is three times the size of the object. Calculate the possible distances of the object from the image. 
MEDIUM
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 1 - Light : Reflection and Refraction>Practice Problems-I>Q 6
A concave mirror produces three times enlarged erect image of an object placed at 20 cm in front of it. Calculate the radius of curvature of the mirror.
HARD
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 1 - Light : Reflection and Refraction>Practice Problems-I>Q 7
A concave mirror produces a real image with a height of 20 mm, of an object 5 mm tall and placed at 10 cm from the mirror. Calculate the focal length of the mirror and position of the image.
HARD
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 1 - Light : Reflection and Refraction>Practice Problems-I>Q 8
When an object is placed at a distance of 30 cm from a convex spherical mirror, the height of image is half of the object's height. Where should the object be placed in order for the height of image to be  13rd of the object's height.
HARD
10th CBSE
IMPORTANT
ESSENTIALS OF PHYSICS CLASS X>Chapter 1 - Light : Reflection and Refraction>Practice Problems-I>Q 9

An object is placed 18 cm in front of a spherical mirror. If the image is formed  2 cm to the right of the mirror, find its focal length. Is the mirror convex or concave? What is the nature of the image? What is the radius of curvature of the mirror?