Reflection

Q. Arrange the following events in a chronological order.

1. Light from a source
2. Object reflects light
3. Reflected light enters our eye
4. Image formation
5. Light falls on an object

Q.

Why is AMBULANCE written backward in an ambulance?

1. To draw attention.

2. If you look at it in the rearview mirror you will see it as AMBULANCE.

3. Because objects appear horizontally inverted in a mirror.

4. To confuse everyone.

Q.

Define normal (reflection) in physics.

Q.

Define reflected ray

Q.

What is normal ray? Definition 1.5marks

Q.

Question 02

Differentiate between regular and diffused reflection. Does diffused reflection mean the failure of the laws of reflection?

Q.

Name the two types of reflection of light. Which type of reflection makes us see an object from all directions?

Q.

Define reflected ray.

Q. Two plane mirrors A and B are placed parallel to each other at a separation of 40 cm. An object is placed at a distance of 10 cm from mirror A. What will be the distance between the images of the object formed by the mirrors?

1. 20 cm
2. 60 cm
3. 80 cm
4. 100 cm

Q. Why is the word ambulance printed laterally inverted on an ambulance van?

Q.

What is the full form of $\angle iand\angle r?$ What is the relation between them?

Q.

A boy is standing at a distance of 4 metre in front of a mirror he moves to metre towards the mirror in which direction will the image move towards the mirror or away from it

Could you please check my answer

Ans . His image would also move to metre towards the mirror .thus the distance of the boy from the mirror and the image of the boy from the mirror would be 2 metres and the total distance of the boy from its image would be 4 metre

Q. Choose the correct statements:

1. We see objects, when light emitted from the objects enter our eyes.
2. We see objects, when light reflected from the objects enter our eyes.
3. Eyes cannot see an object in the absence of light.
4. Eyes emit light rays in all direction.

1. All the statements are correct.
2. Statements 2 and 3 are correct.
3. Statements 1, 2, and 3 are correct.
4. Statements 1 and 2 are correct.

Q.

Draw a neat diagram for the formation of an image in a plane mirror when a pencil is placed in front of it?

Q. The angle between the normal and the reflected ray is known as the

1. angle of incidence
2. angle of reflection
3. angle of correspondence
4. angle of emergence

Q.

How many reflected rays can there be for a given single incident ray falling on a plane mirror?

Q.

If you stand between two parallel plane mirrors, how many images will be formed?

1. 1

2. Infinite

3. 2

4. 10

Q. Angle made by the incident ray with the line representing the surface of the mirror is called the angle of incidence.

1. True
2. False

Q.

In which direction will a light falling along the normal to a mirror be reflected

Could you please check my answer

Ans: as the incident ray is zero degree the reflected ray will also be reflected at the same angle which is at zero degree along the normal

Q.

The angle between the normal and the incident ray is known as the:

1. Angle of incidence

2. Angle of reflection

3. Angle of normal

4. Angle of refraction

Q.

What are illuminated objects?

Q. what will happen to the image formed by a plane mirror if half of it is covered with black paper

Q.

The laws of reflection state that the incident ray, reflected ray and the normal to the surface of mirror lie in different planes.

1. True

2. False

Q. If the angle of incidence is 45°, then what is the angle between the reflected ray and the incident ray?

1. 90°
2. 0°
3. 45°
4. 35°

Q. Which of the following surfaces is correctly matched to the type of reflection taking place from it?

1. Desert sand - Regular reflection
2. Polished table top - Diffused reflection
3. Glass window pane - Regular reflection
4. Disturbed water surface- Regular reflection

Q.

Why can't we see in dark?

1. Our eyes repond only to sunlight

2. There is no light to reflect from the objects

3. Power of eye is reduced

4. Objects absorbs all the light in the dark

Q.

Reflection of the mirror gives us ___ images.

Q.

Write the characters of the image formed by a plane mirror.

Q. A ray of light is incident on mirror 1. It reaches mirror 3 after getting reflected from mirror 1 and mirror 2. The ray makes an angle of 60° with mirror 3 after getting reflected from it, as shown.
Find the angle of incidence of the ray when it was incident on mirror 1.

1. 30°
2. 60°
3. 90°
4. 45°

Q. The image of an object formed by the reflection by a plane mirror is of the same size and shape as the object.

1. False
2. True