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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
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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:
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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.
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Name the phenomenon due to which a swimming pool appears less deep than it really is.
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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?
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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
Fill in the following blank with suitable word:
Light travelling along a normal is ...............refracted.
Concept: undefined >> undefined
Fill in the following blank with suitable word:
Light bends when is passes from water into air. We say that it is ............
Concept: undefined >> undefined
