Question

help me guys subject physics chapter name :- energy and light no spam​

Answer 1

Objective type question :

A N S W E R : (A)

1. Any smooth polished surface which can turn back the rays of light into the same optical medium is called reflection .

2. The angle which an incident ray makes with normal is called angle of incidence.

3. The phenomenon due to which a ray of light, travelling from one optical medium to another optical medium, bounces off from it's surface with a change of angle is called lateral inversion of light.

4. The phenomenon due to which the left side of an object, appears as the right side of image during reflection of light is called mirror .

5. The incident ray, the normal and the reflected ray lie in the same plane at the point of incidence.

A N S W E R : (B)

1.Mirror absorbed are smooth & have perfect bright and shiny surface. So,the reflected rays are even produce a perfect image.

2. For plane mirror, the angle of reflection is always equal to the angle of incidence.

3. The size of the images is equal to that of the object.

4. Rough surfaces produce random reflection in many directions, it's called diffuse reflection.

5. The image formed by plane mirror is always erect & virtual .

A N S W E R : (C)

1. True

2. False

3. True

4. False

5. False

A N S W E R : (D)

1. The image formed by a plane mirror is virtual .

(a). Virtual

2. The regular reflection takes place from the :

(b). still water.

3. The mirror which always forms a virtual, erect image of the same size as the object is

(b). Plane mirror .

4. The angle which the incident ray makes with the normal during reflection is called angle of reflection & angle of incidence.

(c). both (a) & (b)

5. A perpendicular drawn on the point of incidence on the surface of a mirror is called normal .

(c). normal

Answer 2

Answer:

normal

morror

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