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प्रश्न
Define focal length.
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उत्तर
The distance between the pole and the principal focus is called the focal length (f) of a spherical mirror.
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संबंधित प्रश्न
A ray of light is incident normally on a plane mirror. What will be the:
- angle of incidence?
- angle of reflection?
Name the two types of spherical mirrors. What type of mirror is represented by the:
- back side of a shining steel spoon?
- front side of a shining steel spoon?
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
Name the two kinds of spherical mirrors and distinguish between them.
The magnification for a mirror is -3. How are u and v related?
Define the following term:
convex mirror
What do you understand by the term real image?
Define the term Normal.
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
