1.
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?
2.
The focal length of a plane mirror is
3.
The mirror used in automobiles to see the rear field of view is
4.
If a mirror has a focal length of +15 cm it is
5.
The mirror used in search lights is
6.
In case of a virtual and erect image, the magnification of a mirror is
8.
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
9.
The angle between the two refracting surfaces of a total reflecting prism is
10.
If a mirror has a focal length of - 20 cm , it is
11.
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
12.
In the question above, the angle between the reflected ray and the mirror is
13.
In case of a real and inverted image, the magnification of a mirror is
14.
Choose the correct relation between u, v and r for a spherical mirror:
15.
If we say that the focal length of a spherical mirror is n times its radius of curvature, then n must be
16.
A mirror having a very wide field of view must be
17.
The magnification produced by a concave mirror
18.
For an object at infintiy, a concave mirror pro diocesan image at its focus which is
19.
The sum of the reciprocals of object distance and image distance is equal to the _________ of a mirror.
20.
The relation between u, v and f for a mirror is given by: