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प्रश्न
A ray of light is incident on a plane mirror at an angle of 30°. What is the angle of reflection
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उत्तर
The angle of reflection is 30⁰ as the angle of incidence is equal to the angle of reflection, in accordance with the first law of reflection.
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- principal focus
An image that cannot be obtained on a screen is called ______.
Define Radius of curvature of the spherical mirror
What happens when a ray of light falls normally (or perpendiculary) on the surface of a plane mirror?
What type of image is formed:
in a plane mirror?
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
What will be the focal length of this mirror?
Write the formula for a lens connecting image distance (v), object distance (u) and the focal length (f). How does the lens formula differ from the mirror formula?
The diverging lens in part (a) is replaced by a converging lens also of focal length 100 mm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverging lens in part (a).
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.
Three mirrors are created from a single sphere. Which of the following - pole, centre of curvature, radius of curvature, principal axis - will be common to them and which will not be common?
State the number of images of an object placed between two mirrors, formed in each case when mirrors are inclined to each other at (a) 90°, and (b) 60°.
Explain the meaning of the terms focus and focal length in case of a convex mirror, with the help of suitable ray diagram.
For what position of object, the image formed by a concave mirror is magnified and erect?
The distance from the pole to the focus is called ______.
In torches, search lights and headlights of vehicles the bulb is placed ______.
A shopkeeper wanted to fix a mirror which will give a maximum view of his shop. What type of mirror should he use? Give reason.
In the figure shown, the image of a real object is formed at the point I. AB is the principal axis of the mirror. The mirror must be:
