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प्रश्न
Define the term Focus of a concave mirror.
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उत्तर
The focus of a concave mirror is a point on the principal axis of the mirror, where all the rays travelling parallel to the principal axis and close to it after reflection from the mirror converge to that point.
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- centres of curvature
A 2.0 cm tall object is placed 40 cm from a diverging lens of focal length 15 cm. Find the position and size of the image.
A concave lens produces an image 20 cm from the lens of an object placed 30 cm from the lens. The focal length of the lens is:
(a) 50 cm
(b) 40 cm
(c) 60 cm
(d) 30 cm
How is a spherical mirror used to diverge a beam of light from a point? Name the type of mirror used.
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
A straight stick partly dipped in water obliquely appears to be bent at the surface of the water.
Define the following term in relation to concave mirror.
Focal length
What is the relationship between the focal length and radius of curvature?
How tall does a mirror have to be to fit an entire person’s body?
