Question

1. Light is a __________ phenomenon.
2. Light needs a _______ to travel.
3. The laws of reflection are applicable to all types of
reflecting surfaces and ______________.
4. Image formed by a _________ mirror is always erect,
virtual and diminished.
5. Define Refraction of light.
6. Define radius of the curvature.
7. Write the relationship between the Radius of curvature
and Focal length of a spherical mirror.
8. At Infinity the Nature of the Concave mirror is?
9. At Infinity the Size of the Image of the Convex Mirror is?
10. Distances measured perpendicular to and above the
principal axis are taken as?

Answer 1

Answer:

1) natural

2) path

3) spherical surfaces

4) convex

5) refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium.

6) The radius of the sphere of which the mirror forms the part. Represented by “R”

7) focal length is equal to half of radius of curvature

F=R/2

8) For an object at infinity, a concave mirror produces an image at its focus which is real, inverted and diminished.

9) When an object is placed at infinity, virtual image is formed at focus and the size of the image is smaller.

10) positive

Answer 2

Ans1:Vibratory
Ans2)space
Ans3)