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प्रश्न
Which type of mirror is used in the following?
Street lights
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उत्तर
Convex mirror
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संबंधित प्रश्न
No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be ______.
Define the radius of curvature of spherical mirrors.
A diverging mirror is
(a) a plane mirror
(b) a convex mirror
(c) a concave mirror
(d) a shaving mirror
State the relation between object distance, image distance and focal length of a spherical mirror (concave mirror or convex mirror).
What type of mirror should be used as a shop security mirror?
How will you distinguish between a plane mirror, a concave mirror and a convex mirror without touching them?
The diagrams show the appearance of a fork when placed in front of and close to two mirrors A and B, turn by turn.
Figure
(a) Which mirror is convex
(b) Which mirror is concave
Give reasons for your choice.
Draw a diagram to represent a convex mirror. On this diagram mark principal axis, principal focus F and the centre of C if the focal length of convex mirror is 3 cm.
Name two factors on which the focal length of a lens depends.
Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:
between F1 and the optical centre O of the lens.
Which of the above two cases shows the use of convex lens as a magnifying glass? Give reasons for your choice.
Light travels in the same straight line path while passing through different media.
At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.
A ray of light passing through centre of curvature of a spherical mirror, after reflection
A convex mirror is used
A 5 cm tall object is placed perpendicular to the principle axis of a convex lens of focal length 12 cm. The distance of the object from the lens is 8 cm. Using the lens formula, find the position, size and nature of the image formed.
Identify the device used as a spherical mirror or lens in following case, when the image formed is virtual and erect in case.
Object is placed between the focus and device, image formed is enlarged and on the same side as that of the object.
If the object is at infinity in front of a convex mirror the image is formed at infinity.
Why a convex mirror is preferred for rearview mirrors in cars?
Higher-Order Thinking Skills:
A convex mirror is in water. What should be the change in its focal length?
