Category: CBSE

Central Board of secondary education

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Subham Kumar

An object above the water surface appears higher than its actual position to a person underwater due to the refraction of light. As light travels from air to water, it bends towards the normal, causing the object to appear elevated, ...

Subham Kumar

A fish lying inside water appears slightly above its actual depth due to the refraction of light. When light passes from water to air, it bends away from the normal. This bending causes the fish to appear at a shallower ...

Subham Kumar

When a compact disc (CD) is viewed in sunlight, the colors similar to those of a rainbow are seen due to the phenomena of reflection and diffraction. The CD’s surface consists of closely spaced tracks that act as a diffraction ...