Reflection of Light

Q.

The two types of reflection are diffused reflection and regular reflection.

1. True

2. False

Q.

Explain the terms [3 MARKS]
1. Diffused Reflection
2. Regular Reflection

Q.

Reflection from a very smooth surface is called ___ reflection.

Q.

Which type of surfaces produce regular reflection?

1. Smooth

2. Highly polished

3. Rough

4. Scratched

Q. The phenomenon by which the incident light falling on a surface is sent back into the same medium is known as

1. reflection
2. refraction
3. dispersion
4. lateral inversion

Q.

__________ reflection makes the non-luminous objects visible.

Q.

In which of the following options is regular reflection taking place?

1. 

2. 

3. 

4. None of these

Q. Define reflection and kaleidoscope.

Q. A laser projects light at a mirror. The mirror reflects the light as shown. The angle r is equal to _____ degree.

1. 35

Q.

When the rays reflected from a surface are in different directions, the reflection is known as:

1. Discrete reflection

2. Improper reflection

3. Regular reflection

4. Diffused reflection

Q.

Suppose you are in a dark room. Can you see objects in the room? [3 MARKS]

Q. A light ray is incident on plane mirror at an angle ${30}^{\circ }$ with the horizontal. At what angle with horizontal must a plane mirror be placed in its path so. that it becomes vertically upwards after reflection ?

1. ${30}^0$
2. ${45}^0$
3. ${60}^0$
4. ${90}^0$

Q. A laser projects light at a mirror. The mirror reflects the light as shown. The angle r is equal to _____ degree.

1. 35

Q. If the mirror is at the eye level, then the length of the mirror should be the height of the observer to obtain the full image in the mirror.

1. half
2. equal to
3. three-fourth

Q. A light ray is incident at ${30}^{\circ }$ on one of the two mirrors that are placed at right angle to each other. Find the angle of reflection for the ray reflected from mirror B.

1. ${20}^{\circ }$
2. ${30}^{\circ }$
3. ${90}^{\circ }$
4. ${60}^{\circ }$

Q. what is glance angle of incidence and reflection

Q. Two mirrors are inclined at a certain angle A. If a light ray is incident on the first mirror, parallel to the second mirror, and reflected from the second mirror parallel to the first mirror, then the value of A will be _________.

1. ${60}^o$
2. ${90}^o$
3. ${45}^o$​​​​​​​
4. ${30}^o$

Q. A light ray is incident at ${30}^{\circ }$ on one of the two mirrors that are placed at right angle to each other. Find the angle of reflection for the ray reflected from mirror B.

1. ${90}^{\circ }$
2. ${60}^{\circ }$
3. ${30}^{\circ }$
4. ${20}^{\circ }$

Q.

what do you mean by reflection

Q. A light ray is incident at ${30}^{\circ }$ on one of the two mirrors that are placed at right angle to each other. Find the angle of reflection for the ray reflected from mirror B.

1. ${60}^{\circ }$
2. ${30}^{\circ }$
3. ${90}^{\circ }$
4. ${20}^{\circ }$