Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
The parallel beam of light on reflection by a concave mirror converges at a point on the principal axis, midway between pole and the centre of curvature. This point is called the principal focus
APPEARS IN
संबंधित प्रश्न
Fill in the blank
A ________ image cannot be obtained on a screen.
Select the correct alternative
The angle between the incident ray and the ray reflected from the plane mirror is 70°. The angle of incidence will be :
State two uses of a plane mirror.
Two plane mirrors are placed making an angle 60° in between them. For an object placed in between the mirrors, the number of images formed will be :
State the mirror formula for the formation of total number of images formed in two plane mirrors, held at an angle.
A boy stands 4 m away from the plane mirror. If the boy moves `1/2` m towards the mirror, what is now the distance between the boy and his image? Give a reason for your answer.
An insect is sitting in front of a plane mirror at a distance of one meter from it.
- Where is the image of insect formed?
- What is the distance between insect and its image?
- State any two characteristics of image formed in a plane mirror.
Select the correct option:
If an incident ray passes through the centre of curvature of a spherical mirror, the reflected ray will:
Select the correct option:
In case of concave mirror, the minimum distance between an object and its real image is:
