(English Medium) ICSE Class 9 - CISCE Question Bank Solutions

The magnification for a mirror is -3. How are u and v related?

The erect image formed by a concave mirror is of size double the size of object. How are u and v related?

The image formed by a convex mirror is of size one third the size of object. How are u and v related?

A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it.

Find : (a) the focal length of the mirror (b) position of image

A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find

1. the focal length of mirror
2. position of image.

An object of length 4 cm is placed in front of a concave mirror at distance 30 cm. The focal length of mirror is 15 cm.

1. Where will the image form?
2. What will be the length of image?

When an object of height 1 cm is kept at a distance 4 cm from a concave mirror, its erect image of height 1.5 cm is formed at a distance 6 cm behind the mirror. Find the focal length of mirror, by drawing. 

A point light source is kept in front of a convex mirror at a distance of 40 cm. The focal length of the mirror is 40 cm. Find the position of image. 

An object 5 cm high is placed at a distance 60 cm in front of a concave mirror of focal length 10 cm. Find the position and size of the image. 

At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object. 

An object of height 2 cm is placed at a distance of 20 cm in front of a concave mirror of a focal length of 12 cm. Find the position, size, and nature of the image.

An object is placed at 4 cm distance in front of a concave mirror of radius of curvature 24 cm. Find the position of image. Is the image magnified? 

An object 5 cm high forms a virtual image of 1.25 cm high, when placed in front of a convex mirror at a distance of 24 cm. Calculate:

1. the position of the image
2. the focal length of the convex mirror.

An object forms a virtual image which is 1/8th of the size of the object. If the object is placed at a distance of 40 cm from the convex mirror, calculate:

1. the position of the image
2. the focal length of the convex mirror.

Select the correct option:

A concave mirror is made by cutting a portion of a hollow glass sphere of radius 30 cm. The focal length of the concave mirror is:

Select the correct option:

A mirror forms a virtual image (diminished) of an object, whatever be the position of object:

Select the correct option:

Which mirror is used in periscope?

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Looking into a mirror one finds her image diminished, the mirror is: