1.
The mirror used in search lights is
2.
The angle between the two refracting surfaces of a total reflecting prism is
3.
For an object at infintiy, a concave mirror pro diocesan image at its focus which is
5.
In case of a virtual and erect image, the magnification of a mirror is
6.
If a mirror has a focal length of - 20 cm , it is
7.
The mirror used in automobiles to see the rear field of view is
8.
An incident ray strikes a plane mirror at an angle of 15° with the mirror. The angle between the incident ray and reflected ray is
9.
A real image, equal in size to the object, is obtained when the object is placed at the centre of curvature in front of a
10.
Choose the correct relation between u, v and r for a spherical mirror:
11.
In the question above, the angle between the reflected ray and the mirror is
12.
The magnification produced by a concave mirror
13.
The relation between u, v and f for a mirror is given by:
14.
If we say that the focal length of a spherical mirror is n times its radius of curvature, then n must be
15.
A virtual, erect and magnified image of an object is to be produced with a concave mirror of focal length 12 cm. Which of the following object distance should be chosen for this purpose?
16.
If a mirror has a focal length of +15 cm it is
17.
The sum of the reciprocals of object distance and image distance is equal to the _________ of a mirror.
18.
The focal length of a plane mirror is
19.
A mirror having a very wide field of view must be
20.
In case of a real and inverted image, the magnification of a mirror is
