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प्रश्न
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
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संबंधित प्रश्न
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 :
Draw a diagram to show the reflection of a light ray incident normally on a plane mirror.
Why is it difficult to read the image of the text of a page formed due to reflection by a plane mirror?
Two plane mirrors are placed making an angle θ° in between them. For an object placed in between the mirrors, if angle is gradually increased from 0° to 180°, how will the number of images change : increase, decrease or remain unchanged?
State two uses of a plane mirror.
By drawing a neat diagram define the following:
Mirror
What must be the minimum length of a plane mirror in which a person can see himself full length? Draw a diagram to justify your answer. Does the distance of a person from the mirror affect the above answer?
Select the correct option:
A ray of light is incident on a concave mirror. If it is parallel to principal axis, the reflected ray will:
Select the correct option:
In case of concave mirror, the minimum distance between an object and its real image is:
