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State laws of reflection of light.
An object of height 5·0 cm is placed at 15 cm in front of a concave mirror of focal length 10 cm. At what distance from the mirror should a screen be placed, so that a focussed image is obtained on it ? Find the height of the image.
State laws of refraction of light.
Draw a ray diagram to show refraction of a ray of light through a rectangular glass slab. How is the emergent ray related to incident ray ? Mark lateral displacement in the diagram.
The Phenomena of light involved in the formation of a rainbow in the sky are
No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be
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