Q1 of 18 Page 165

Reflection from a smooth surface is called _____________reflection.

(regular, irregular, multiple, total internal)

Regular

The bouncing of light is referred to as reflection. When reflection takes place in a smooth, polished surface, then it is called regular reflection. In this case, the light rays get reflected in one direction.



More from this chapter

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1

If the angle of incidence is 40° the angle of reflection is __________

(10°, 40°, 20°, 90°)

 1

The angle between the incident ray and the normal is called __________

(angle of incidence, angle of reflection, angle of refraction)

 2

Fill in the blanks:

1. The working principle of a periscope is __________________


2. A fruit appears to be bigger in a glass of water due to _____________


3. Sound cannot travel in ___________


4. When we touch the ringing bell we can feel the ______________


5. An audible sound has the frequency range of _____________

 3

Identify the mistakes and correct them:

The beautiful pattern that we obtain in a kaleidoscope is because of refraction.