When two mirrors are kept parallel to each other, Then the number of images formed is:
Zero
One
Infinite
Two
Which of the following sentence is true for a real image?
A real image can be obtained on a screen
A real image is erect
A real image is formed by a plane mirror
A convex mirror produces a real image
By law of reflection
At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object?
50 cm
75 cm
12.5 cm
20 cm
Convex mirror is used as
a shaving mirror
a rear view mirror
a reflector
a doctor's head mirror
An object is placed between two plane mirrors inclined at an angle of 50 °. Then the number of images formed is
5
7
8
10
The radius of curvature of a convex mirror is 40 cm. Then the focal length is
80 cm
10 cm
In simple periscope, the two plane mirror inclined an angle of
90 °
45 °
180 °
360 °
When a concave mirror is used as a shaving mirror, then the person's face is:
in the center of curvature
between the pole and the focus of mirror
behind the mirror
between center of curvature and focus
A man standing in front of a plane mirror, finds his image at a distance 6 m from himself. Then the distance of man from the mirror is:
3 m
6 m
12 m
2 m
