Physics-10th The Human Eye and the Colourful World CBSE Board 2025 Medium
(i) Name and explain the phenomenon of light responsible to make the path of a beam of light visible when it…
- (i)Name and explain the phenomenon of light responsible to make the path of a beam of light visible when it enters a smoke/dust-filled room through a small hole. Also state the dependence of the colour of the light we receive on the size of the particles of the medium through which the light passes.
- (ii)A person suffering from presbyopia needs spectacles having bifocal lenses. If the power of two lenses used in his spectacles is D and D, which one of the two lenses is for the correction of his distant vision and what is its focal length ?
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