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प्रश्न
A wall reflects light and a mirror also reflects light. What difference is three in the way they reflect light?
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उत्तर
| S.No. | Wall Reflected Light | Mirror Reflected Light |
| 1 | Light rays are reflected in all directions due to the rough surface. | Light rays are reflected in one direction only due to the smooth surface. |
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संबंधित प्रश्न
The letter F is placed in front of a plane mirror:
How would its image look like when seen in a plane mirror?
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.
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
Explain how to read the following message which was found on some blotting paper:
In which material do you think light rays travel faster-glass or air?
Light travels more quickly through water than through glass.
Which is optically denser : water or glass?
With the help of a labelled diagram, explain why a tank full of water appears less deep than it actually is.
State two factors on which the lateral displacement of the emergent ray depends.
The speed of light is more in glass than in water.
When a ray of light travels from water to air, it bends ............. the normal.
Draw suitable diagrams to illustrate how a beam of light incident parallel to the principal axis is reflected by:
(a) a concave mirror, and (b) a convex mirror
The diagram (figure) given below shows two parallel rays 1 and 2 incident on (a) a concave mirror, (b) a convex mirror. Draw the reflected rays and mark the focus by the symbol F.
A light ray suffers reflection and refraction at the boundary in passing from air to water. Draw a neat labelled ray diagram to show it.
The phenomenon of change in the direction of light when it passes from one transparent medium to another is called ___________.
Identify the wrong figure from the following.
The deviation of light ray from its path when it travels from one transparent medium to another transparent medium is called ______.
The bending of light as it passes from one medium to another is called ______.
A water tank appears shallower when it is viewed from the top due to refraction.
Assertion: The air bubble shines in water.
Reason: Air bubble shines due to the refraction of light.
The bottom of swimming pool appears to be less deep than the actual one because of
