Q3 of 25 Page 90

Light is falling on surface S1, S2, S3 as shown in Fig.16.1.




Surfaces on which the angle of incidence is equal to the angle of reflection is/are


The laws of reflection still holds as long as the incident ray, the normal at the point of incidence and the reflected fray all lie in the same plane.

More from this chapter

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1

Part of the eye which controls the light entering is called

 2

We can see a non-luminous object when light:

 4

A tiny mirror M is fixed on a piece of cardboard placed on a table. The cardboard is illuminated by light from a bulb. The position of eye with respect to position of bulb is shown in Fig.16.2 as A, B, C and D. In which position mirror will be visible?





 5

A small hole P is made in a piece of cardboard. The hole is illuminated by a torch as shown in Fig. 16.3. The pencil of light coming out of the hole falls on a mirror.


At which point should the eye be placed so that the hole can be seen?