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प्रश्न
Radius of curvature of a spherical mirror is ............. its focal length.
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उत्तर
Radius of curvature of a spherical mirror is two times its focal length
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संबंधित प्रश्न
List four specific characteristics of the images of the objects formed by convex mirrors.
Name the type of mirror used in the following situation:
Headlights of a car
Support your answer with reason.
A communications satellite in orbit sends a parallel beam of signals down to earth. If these signals obey the same laws of reflection as light and are to be focussed onto a small receiving aerial, what should be the best shape of the metal 'dish' used to collect them?
An object 3 cm high is placed at a distance of 10 cm in front of a converging mirror of focal length 20 cm. Find the position, nature, and size of the image formed.
An object of 5.0 cm size is placed at a distance of 20.0 cm from a converging mirror of focal length 15.0 cm. At what distance from the mirror should a screen be placed to get the sharp image? Also calculate the size of the image.
Why are concave mirrors used in solar devices?
Name the mirror(s) that can give (i) an erect and enlarged image, (ii) same sized, inverted image
Which of the following ray diagrams is correct for the ray of light incident on a concave mirror as shown in figure?
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| A | B | C | D |
An erect and enlarged image can be formed by
An image formed by a lens is erect. Such an image could be formed by a
