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प्रश्न
Find the nature and focal length of a spherical mirror whose radius of curvature is +24 cm.
उत्तर
The radius of curvature of the given is, R = +24 cm
So, its focal length,` f = R/2 = 24/2 = +12 cm`
Therefore, the focal length of the mirror is 12 cm.
Since the focal length of the given mirror is positive, the mirror is the convex mirror.
संबंधित प्रश्न
Define the radius of curvature of spherical mirrors.
Which type or mirror is usually used as a rear-view mirror in motor cars?
Where would the image be formed by a convex mirror if the object is placed:
at infinity?
Draw labelled ray-diagrams to show the formation of image in both the case.
A boy is standing in front of and close to a special mirror. He finds the image of his head bigger than normal, the middle part of his body of the same size, and his legs smaller than normal. The special mirror is made up of three types of mirrors in the following order from top downwards:
(a) Convex, Plane, Concave
(b) Plane, Convex, Concave
(c) Concave, Plane, Convex
(d) Convex, Concave, Plane
The radius of curvature of a convex mirror used as a rear view mirror in a moving car is 12.0 m. A truck is coming from behind it at a distance of 3.54 m. Calculate (a)
- position and
- size of the image relative to the size of the truck.
- What will be the nature of the image?
Name two factors on which the focal length of a lens depends.
The diagram given below in fig shows a ray of light AO falling on a surface separating two media. Draw the refracted ray in each, case.
State two uses of a convex mirror.
When the reflecting surface is curved outwards the mirror formed will be ______.
The image formed by a convex mirror is always ______.
