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प्रश्न
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उत्तर
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संबंधित प्रश्न
A student obtains a sharp image of the distant window (W) of the school laboratory on the screen (S) using the given concave mirror (M) to determine its focal length. Which of the following distances should he measure to get the focal length of the mirror?
The letter F is placed in front of a plane mirror:
What is the name of the phenomenon involved?
A diverging lens is used in:
(a) a magnifying glass
(b) a car to see objects on rear side
(c) spectacles for the correction of short sight
(d) a simple camera
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.
How is the focal length of a spherical mirror related to its radius
Explain the meaning of the terms focus and focal length in case of a convex mirror, with the help of suitable ray diagram.
An object 5 cm high forms a virtual image of 1.25 cm high, when placed in front of a convex mirror at a distance of 24 cm. Calculate:
- the position of the image
- the focal length of the convex mirror.
The boxes in figure (a, b, c) represent mirrors; insert a mirror which will reflect the incident ray as shown in the diagram.
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.
