Easy
What happens when a light ray incident normally on the surface of a glass slab enters from air into the glass?
- AThe angle of refraction is greater than the angle of incidence.
- BThe angle of refraction is smaller than the angle of incidence.
- CIt passes in the same direction without refraction.
- DIt undergoes total internal reflection.
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Similar Questions
$A$ $4.5\, cm$ needle is placed $12\, cm$ away from a convex mirror of focal length $15\, cm$. Give the location of the image and its magnification.
Medium
View SolutionAn object is placed at the following distances from a concave mirror of focal length $15 \, cm$.
$(a)$ $10 \, cm$ $(b)$ $20 \, cm$ $(c)$ $30 \, cm$ $(d)$ $40 \, cm$
Which position of the object will produce:
$(1)$ Virtual image
$(2)$ $A$ diminished real image
$(3)$ An enlarged real image
$(4)$ An image of same size
$(a)$ $10 \, cm$ $(b)$ $20 \, cm$ $(c)$ $30 \, cm$ $(d)$ $40 \, cm$
Which position of the object will produce:
$(1)$ Virtual image
$(2)$ $A$ diminished real image
$(3)$ An enlarged real image
$(4)$ An image of same size
Medium
View SolutionName the spherical mirror used as:
$(a)$ $1.$ Shaving mirror,
$2.$ Rear-view mirror in vehicles,
$3.$ Reflector in searchlights.
$(b)$ Write any three differences between a real and virtual image.
$(a)$ $1.$ Shaving mirror,
$2.$ Rear-view mirror in vehicles,
$3.$ Reflector in searchlights.
$(b)$ Write any three differences between a real and virtual image.
Medium
View SolutionExplain why drivers prefer to use a convex mirror as a rearview mirror in automobiles.
Easy
View SolutionAn object is brought towards a concave mirror. How does the position and size of the image change?
Easy
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