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प्रश्न
A ray of light is incident normally on a plane mirror. What will be the
angle of reflection?
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उत्तर
The angle of reflection is 0o in accordance with the first law of reflection, which states that the angle of incidence is equal to the angle of reflection.
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- optical centre
What is a virtual image?
Which are the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain with the help of suitable ray diagrams.
A student obtained on a screen the sharp image of a candle flame placed at the farther end of laboratory table using a concave mirror. For getting better value of focal length of the mirror, the teacher suggested to him to focus the sun. What should the student do?
(A) Should move the mirror away from the screen.
(B) Should move the mirror towards the screen.
(C) Should move the mirror and screen both towards the sun.
(D) Should move only the screen towards the sun.
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.
The diagram below in Figure, shows a convex mirror. C is its centre of curvature and F is its focus. (i) Draw two rays from A and hence locate the position of image of object OA. Label the image IB. (ii) State three characteristics of the image.
State the position of object for which the image formed by a concave mirror is of same size.
Name the kind of mirror used to obtain :
A real and enlarged image
A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it. Find:
- the focal length of the mirror
- position of image
Select the correct option:
Which mirror is used in periscope?
Define the following term in relation to concave mirror.
Pole
Define the following term in relation to concave mirror.
Principal focus
Spherical mirrors are one form of ______ mirrors.
A spherical mirror whose reflecting surface is curved outwards is called ______ mirror.
The image formed in a plane mirror is always inverted.
What is the focal length (f) of a mirror?
