MEDIUM
10th CBSE
IMPORTANT
Earn 100

If the image formed by a mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it? Draw a ray diagram to justify your answer. Where and why do we generally use this type of mirror?

Important Questions on Light : Reflection and Refraction

MEDIUM
10th CBSE
IMPORTANT
A concave mirror of focal length 'f' can form a magnified erect as well as inverted image of an object with respect to the mirror in each case. Draw the ray diagrams for the same.
MEDIUM
10th CBSE
IMPORTANT
How will you distinguish between a plane mirror, a convex mirror and a concave mirror just by looking at the images formed by them?
MEDIUM
10th CBSE
IMPORTANT

Draw ray diagrams to show the formation of images when the object is placed in front of a concave mirror.

(i) between pole and focus point

(ii) between focus and centre of curvature

(iii) beyond centre of curvature.

MEDIUM
10th CBSE
IMPORTANT

Draw ray diagrams to show the formation of images when the object is placed in front of a convex mirror.

(i) at infinity

(ii) at any point between infinity and pole.

Why is the focal length of a convex mirror is positive?

EASY
10th CBSE
IMPORTANT
Calculate the speed of light in water. Given the refractive index of water is 43.
MEDIUM
10th CBSE
IMPORTANT

The refractive index of diamond is 2.47 and that of glass is 1.51. How fast does light travel in glass as compared to diamond?

 

EASY
10th CBSE
IMPORTANT
With respect to air the refractive index of ice is 1.31 and that of rock-salt is 1.54. Calculate the refractive index of rock-salt with respect to ice.
EASY
10th CBSE
IMPORTANT
Refractive index of water is 43 and for glass it is 32, with respect to air. What is the refractive index of glass with respect to water?