Q3 of 9 Page 115

How will you explain the statement ‘we cannot see the objects in a dark room’?

Light itself is not visible we see the objects when the light reflected from them reaches our eye. In the Dark room there is no light hence no light is reflected from the objects and we cannot see the objects in the dark.


More from this chapter

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1

Fill in the blanks

i. The perpendicular to the mirror at the point of incidence is called............


ii. The reflection of light from a wooden surface is.............. reflection.


iii. The working of Kaleidoscope is based on the properties of ..............

 2

Draw a figure describing the following. The reflecting surfaces of two mirrors make an angle of 900 with each other. If a ray incident of one mirror has an angle of incidence of 300 , draw the ray reflected from the second mirror. What will be its angle of reflection?

 4

Explain the difference between the regular and irregular reflection of light.

 5

Draw a figure showing the following.

a. Incident Ray


b. Normal


c. Angle of incidence


d. Angle of reflection


e. Point of incidence


f. Reflected ray