Question

help this
subject :- physics
chapter name:- light and energy
listen !
this question only for brainly stars ok

help this all

​

Answer 1

Objective Type Questions:

A. Fill in the Blanks:

1. Any smooth surface which can turn back the rays of light into the same optical medium is called mirror.
2. The angle which the incident makes with the 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 from its surface with a change of angle is called reflection of light.
4. The phenomenon due to which the left side of the object, appears on the right side of the image, during reflection of light, is called lateral inversion.
5. The incident ray, the normal and the reflected ray, lie in the same plane, at the point of incidence.

B. Correct the Incorrect Statements:

1. During reflection  most of the rays are reflected by the mirror.
2. Angle of incidence is equal to Angle of reflection for polished glass only.
3. In case of plane mirror, the size of the image is equal to the size of the object.
4. Regular reflection takes place on highly polished surfaces.
5. Plane mirrors always form virtual images.

C.  True or False:

1. Virtual image cannot be taken on screen - True
2. Image formed on a plane mirror is real and erect - False
3. Diffused reflection takes place from rough surfaces - True
4. Plane mirrors are used as reflectors in Solar cookers - False
5. Regular reflection is less harmful to eyes than Diffused reflection - False.

D. Choose the correct answer:

1. Image formed by a plane mirror is - a) Virtual
2. Regular reflection takes place from - b) Still water
3. Mirror which always forms virtual, erect image of the same size of the object is - b) Plane mirror
4. The angle which the incident ray makes with the normal during reflection is called - b) Angle of incidence
5. A perpendicular drawn on the point of incidence on the surface of the mirror is called: c) Normal

Answer 2

Answer:

true

false

true

false

true