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प्रश्न
Name the kind of mirror used to obtain
(a) a real and enlarged image
(b) a virtual and enlarged image
(c) a real and diminished image, and
(d) a virtual and diminished image.
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उत्तर
a) Concave
b) Concave
c) Concave
d) Convex
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संबंधित प्रश्न
A student focused the Sun rays using an optical device 'X' on a screen S as shown.
From this it may be concluded that the device 'X' is a (select the correct option)
(A) Convex lens of focal length 10 cm.
(B) Convex lens of radius of curvature 20 cm.
(C) Convex lens of focal length 20 cm.
(D) Concave mirror of focal length 20 cm.
Image formed by a convex ______ is always virtual and smaller in size.
A ray of light is incident normally on a plane mirror. What will be the
angle of reflection?
What type of image is formed:
on a cinema screen?
Name the two types of spherical mirrors. What type of mirror is represented by the:
front side of a shining steel spoon?
(a) When a concave mirror is used as a shaving mirror, where is the person's face in relation to the focus of mirror?
(b) State three characteristics of the image seen in part (a).
Define the term principal focus in case of convex mirror. Draw a convex mirror and show its principal focus and focal length clearly.
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
