Question

a) How are power and focal length of a lens related?
b) You are provided with two lenses of focal length 20 cm and 40 cm respectively. Which lens will you use to obtain more convergent fight?​

Answer 1

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How are power and focal length of a lens related? You are provided with two lenses of focal length 20 cm and 40 cm respectively. ... More the powerof a lens more is its converging power. Thus, the lens of shorter focal lengthwill have more

converging power

The power of a lens is related to its focal length as

P = 1/f (in m).

More the power of a lens more is its converging power. Thus, the lens of shorter focal length will have more converging power

hope it helps you dear(◍•ᴗ•◍)❤

PLs mArK As bRaInLIeST deAR❤️

Answer 2

Answer:

A. power of a lens is inversely proportional its focal length therefore lens having focal length of 20 cm will provide more convergenve ..

• B. focal length of any lens is the point where light converges. So, if focal length is more then the lens is converges the light to a larger distance that is it has converged less.

so we can affirm the lens of 20 cm should be used to convert to convert a light to a larger extant