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प्रश्न
What is a spherical mirror?
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उत्तर
A reflecting surface which is a part of a sphere is called a spherical mirror.
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संबंधित प्रश्न
A lens forms a real image 3 cm high of an object 1 cm high. If the separation of object and image is 15 cm, find the focal length of the lens.
Draw separate diagram for the formation of virtual image of an object by a concave mirror.
A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting better value of focal length of the mirror, the subject teacher suggested him for focusing a well illuminated distant object. What should the student do?
(A) He should move the mirror away from the screen.
(B) He should move the mirror slightly towards the screen.
(C) He should move the mirror as well as the screen towards the newly selected object.
(D) He should move only the screen towards the newly selected object.
Define the following term in relation to concave mirror.
Aperture
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
The image formed in a plane mirror is always inverted.
The minimum length of the mirror required to see the full image of the person is half ‘ of his height.
Visit a nearby hospital. You can also visit the clinic of an ENT specialist, or a dentist. Request the doctor to show you the mirrors used for examining ear, nose, throat and teeth. Can you recognise the kind of mirror used in these instruments?
