Advertisements
Advertisements
प्रश्न
State the number of images of an object placed between two mirrors, formed in each case when mirrors are inclined to each other at (a) 90°, and (b) 60°.
Advertisements
उत्तर
(a) Angle between the mirrors, θ = 90o
Now, n = 360o / θo = 360o / 90o = 4, which is even.
Hence number of images formed will be (n-1); i.e., 4 - 1 = 3 images
(b) Angle between the mirrors, θ = 60o
Now, n = 360o / θo = 360o / 60o = 6, which is even.
Hence number of images formed will be (n-1); i.e., 6-1 = 5 images
APPEARS IN
संबंधित प्रश्न
We can obtain a real, enlarged and inverted image by a concave mirror.
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror or convex mirror)?
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
Draw suitable diagrams to illustrate the action of (i) concave mirror and (ii) convex mirror on a beam of light incident parallel to the principal axis.
Draw a ray diagram to show the formation of image by a concave mirror for the object beyond its centre of curvature. State three characteristics of the image.
Define the term Aperture.
Define the term Pole.
Define the following terms in the context of a diverging mirror:
- Principal focus
- Focal length
Draw a labelled ray diagram to illustrate your answer.
