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प्रश्न
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
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उत्तर
All distances are measured from the pole of a spherical mirror.
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संबंधित प्रश्न
Define the following term in the context of spherical mirrors:- Centre of curvature
Explain the following term related to spherical lenses:- aperture
Explain the following term related to spherical lenses:- principal focus
A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?
Explain the following terms :
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors.
What do you understand by the focus and focal length of a spherical mirror? Show them on the separate diagrams for each of a concave mirror and a convex mirror.
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
An optical device has been given to a student and he determines its focal length by focusing the image of the sun on a screen placed 24 cm from the device on the same side as the sun. Select the correct statement about the device.
(A) Convex mirror of focal length 12 cm
(B) Convex lens of focal length 24 cm
(C) Concave mirror of focal length 24 cm
(D) Convex lens of focal length 12 cm
How is the focal length of a spherical mirror related to its radius of curvature?
Draw a ray diagram to show the formation of image of an object kept in front of a convex mirror. State three characteristics of the image.
For an incident ray directed towards centre of curvature of a spherical mirror the reflected ray:
A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it.
Find : (a) the focal length of the mirror (b) position of image
Define the following term in relation to concave mirror.
Principal axis
Define the following term in relation to concave mirror.
Principal focus
Define the following term in relation to concave mirror.
Aperture
Define the term Centre of curvature.
How tall does a mirror have to be to fit an entire person’s body?
