Question

All formula of Light in Physics of class 10

Answer 1

mirror formula -1/v + 1/u= 1/f

magnification(mirror)= height of image (h') / height of object (h) or -v/u

lens formula = 1v - 1/u = 1/f

magnification(lens) = h'/h (or)v/u  

power = 1/f  

refractive index 21 = speed of light in medium1 / speed of light in medium 2

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Answer 2

Answer:

water is colourless

Explanation:

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