Advertisements
Advertisements
प्रश्न
The focal length of a concave mirror is 10 cm. Find its radius of curvature.
उत्तर
Radius of curvature = 2 × focal length
Or, R = 2f = 2 × 10 = 20 cm
APPEARS IN
संबंधित प्रश्न
A student used a device (X) to obtain/focus the image of a well illuminated distant building on a screen (S) as shown below in the diagram. Select the correct statement about the device (X).
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
A ray of light travels from a denser medium to a rarer medium. How will it bend?
An optical device has been given to a student and he determines its focal length by focusing the image of the sun on a screen placed 24 cm from the device on the same side as the sun. Select the correct statement about the device.
(A) Convex mirror of focal length 12 cm
(B) Convex lens of focal length 24 cm
(C) Concave mirror of focal length 24 cm
(D) Convex lens of focal length 12 cm
State the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain your answer with the help of suitable ray diagrams.
Name the kind of mirror used to obtain:
A real and diminished image.
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
What is the focal length (f) of a mirror?
