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The image formed by a plane mirror is :
(a) virtual, behind the mirror and enlarged.
(b) virtual, behind the mirror and of the same size as the object.
(c) real, at the surface of the mirror and enlarged.
(d) real, behind the mirror and of the same size as the object.
Concept: undefined >> undefined
The figure given alongside shows the image of a clock as seen a plane mirror. The correct time is:
Figure
(a) 2.25
(b) 2.35
(c) 6.45
(d) 9.25
Concept: undefined >> undefined
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A man stands 10 m in front of a large plane mirror. How far must the walk before he is 5 m away from his image?
Concept: undefined >> undefined
An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the positions of the original and final images seen in the mirror is ______.
Concept: undefined >> undefined
A man sits in an optician's chair looking into plane mirror which is 2 m away from him and views the image of a chart which faces the mirror and is 50 cm behind his head. How far away from his eyes does the chart appear to be?
Concept: undefined >> undefined
A ray of light strikes a plane mirror PQ at an angle of incidence of 30°, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is ______.
Concept: undefined >> undefined
Explain how to read the following message which was found on some blotting paper:
Concept: undefined >> undefined
If a ray of light goes from a rarer medium to a denser medium, will it bend towards the normal or away from it?
Concept: undefined >> undefined
If a ray of light goes form a denser medium to a rarer medium, will it bend towards the normal or away from the normal?
Concept: undefined >> undefined
A ray of light travelling in glass emerges into air. State whether it will bend towards the normal or away from the normal.
Concept: undefined >> undefined
A ray of light goes from water into air. Will it bend towards the normal or away from the normal?
Concept: undefined >> undefined
State two effects caused by the refraction of light.
Concept: undefined >> undefined
Name the phenomenon due to which a swimming pool appears less deep than it really is.
Concept: undefined >> undefined
When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?
Concept: undefined >> undefined
A ray of light passes from air into a block of glass. Does it bend towards the normal or away from it?
Concept: undefined >> undefined
As light rays pass from water into glass, are they refracted towards the normal or away from the normal?
Concept: undefined >> undefined
In which material do you think light rays travel faster-glass or air?
Concept: undefined >> undefined
Which phenomenon of light makes the water to appear shallower than it really is?
Concept: undefined >> undefined
State whether the following statement is true or false:
Refraction occurs because light slows down in denser materials.
Concept: undefined >> undefined
Why does a ray of light bend when it travels from one medium to another?
Concept: undefined >> undefined
