EASY
Earn 100

What is the nature of an image formed by a plane mirror when an extended object of height h is placed in front of the mirror?

Important Questions on Light

HARD
Science>Physics>Light>Reflection of Light
An object 5 cm in length is placed at a distance of 20 cm in front of a convex mirror of radius of curvature 30 cm. Find the position of image, its nature and size.
EASY
Science>Physics>Light>Reflection of Light

A student holding a mirror in his hand, directed the reflecting surface of the mirror towards the Sun. He then directed the reflected light on to a sheet of paper held close to the mirror.

Which type of mirror does he have?

HARD
Science>Physics>Light>Reflection of Light
Draw the ray diagram of image formation by a convex mirror when the object is placed at its centre of curvature.
EASY
Science>Physics>Light>Reflection of Light
Which type of mirror is used by a dentist?
EASY
Science>Physics>Light>Reflection of Light
A concave mirror forms an enlarged, erect, virtual image of an object, only when the object is placed
HARD
Science>Physics>Light>Reflection of Light
An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image. 
EASY
Science>Physics>Light>Reflection of Light
If the image formed by a spherical mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it ? Draw a labelled ray diagram to support your answer. 
EASY
Science>Physics>Light>Reflection of Light

Write the sign convention for reflection by spherical mirrors.

EASY
Science>Physics>Light>Reflection of Light
When an object is kept within the focus of a concave mirror, an enlarged image is formed behind the mirror. This image is:
EASY
Science>Physics>Light>Reflection of Light
A student holding a mirror in his hand, directed the reflecting surface of the mirror towards the Sun. He then directed the reflected light on to a sheet of paper held close to the mirror.

What should he do to burn the paper?

EASY
Science>Physics>Light>Reflection of Light
Define the radius of curvature of a spherical mirror.
EASY
Science>Physics>Light>Reflection of Light

If a mirror forms erect image for objects placed between pole and focus, and it forms real-inverted image for object placed anywhere between focus and infinity, then the mirror is:

EASY
Science>Physics>Light>Reflection of Light
A ray of light makes an angle of 50° with the surface S1 of the glass slab. Its angle of incidence will be 
EASY
Science>Physics>Light>Reflection of Light
Give the type of mirror which is used as a rear-view mirror in a car. Give two reasons.
MEDIUM
Science>Physics>Light>Reflection of Light
Give any four characteristics when the object is at the centre of curvature of a concave mirror.
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HARD
Science>Physics>Light>Reflection of Light
An object of size 70 mm is place at 27 cm in front of a concave mirror of focal length 18 cm.  At what distance from the mirror should a screen be placed so that a sharp focussed image can be obtained? Find the size and nature of the image.
EASY
Science>Physics>Light>Reflection of Light

Why convex mirrors are used as rear-view mirrors in vehicles?

MEDIUM
Science>Physics>Light>Reflection of Light

A student holding a mirror in his hand, directed the reflecting surface of the mirror towards the Sun. He then directed the reflected light on to a sheet of paper held close to the mirror.

Will he be able to determine the approximate value of focal length of this mirror from this activity ? Give reason and draw ray diagram to justify your answer in this case.

HARD
Science>Physics>Light>Reflection of Light
A person has D cm wide face and his two eyes are separated by d cm. The minimum width (in cm) of a mirror required for the person to view his complete face is :
EASY
Science>Physics>Light>Reflection of Light
The laws of reflection hold true for: