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प्रश्न
Radius of curvature of a spherical mirror is ............. its focal length.
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उत्तर
Radius of curvature of a spherical mirror is two times its focal length
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संबंधित प्रश्न
Draw a ray diagram to show the path of the reflected ray corresponding to an incident ray of light parallel to the principal axis of a convex mirror and show the angle of incidence and angle of reflection on it.
A spherical mirror and a thin spherical lens have each a focal length of -15 cm. The mirror and the lens are likely to be ______.
Draw the following diagram in your answer book and show the formation of image with the help of suitable rays:
Give two uses of concave mirrors. Explain why you would choose concave mirrors for these uses.
The angle of incidence for of light passing through the centre of curvature of a concave mirror is:
(a) 45°
(b) 90°
(c) 0°
(d) 180°
An object is placed at a distance of 10 cm from a concave mirror of focal length 20 cm.
- Draw a ray diagram for the formation of image.
- Calculate the image distance.
- State two characteristics of the image formed.
Between which two points of concave mirror should an object be placed to obtain a magnification of:
(a) −3
(b) +25
(c) −0.4
Draw a ray diagram to show the formation of image of an object placed on the principal axis of a convex mirror. State the position, size and nature of the image. What happens to the image as the object is moved away from the mirror?
The mirror used by the ophthalmologist to examine the eye is _______.
Under which of the following conditions a concave mirror can form an image larger than the actual object?
