Question

a convex lens is used for image formation for different position of an object. what inference can be drawn about the following when is palces at a distance of 20 cm from the pole of convex mirror. a) nature of the mirror b) magnification c) position of the image​

Answer 1

Answer:

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Answer 2

Answer:

Here,

u = - 10cm

f = - 15 cm

Formula used :-

$\frac{1}{f} = \frac{1}{v} + \frac{1}{u}$

Solution:-

$\frac{1}{f} = \frac{1}{v} + \frac{1}{u}$

$- \frac{1}{15} = \frac{1}{v} + ( \frac{1}{ - 10} )$

$- \frac{1}{15} = \frac{1}{v} - \frac{1}{10}$

$- \frac{1}{15} + \frac{1}{10} = \frac{1}{v}$

$\frac{ - 2 + 3}{30} = \frac{1}{v}$

$\frac{1}{30} = \frac{1}{v}$

$v = 30cm$

Magnification (m) =

$- \frac{v}{u}$

$= \frac{ - 30}{ - 10}$

$= 3$

so, the image is highly magnified

The labeled diagram is in the attachment

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