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प्रश्न
At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.
पर्याय
True
False
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उत्तर
True.
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संबंधित प्रश्न
If the focal length of a spherical mirror is 12.5 cm, its radius of curvature will be:
(a) 25 cm
(b) 15 cm
(c) 20 cm
(d) 35 cm
Which type of mirror has:
- positive focal length?
- negative focal length?
What type of image/images are formed by:
a concave mirror?
An object is placed at a long distance in front of a convex mirror of radius of curvature 30 cm. State the position of its image.
Name the mirror which can give:
an erect and diminished image of an object.
Draw a labelled ray diagram to show the formation of image of an object by a convex mirror. Mark clearly the pole, focus and centre of curvature on the diagram.
An object is kept at a distance of 5 cm in front of a convex mirror of focal length 10 cm. Calculate the position and magnification of the image and state its nature.
What is the effect on the size and position of the image of moving the object (i) towards the lens and (ii) away from the lens?
Magnification produced by a rear view mirror fitted in vehicles
Assertion: Convex mirrors are used as a rearview mirror in vehicles for observing traffic at our back.
Reason: A convex mirror has a much larger field of view.
