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CBSE

Geometrical and Physical Optics

A concave mirror has a focal length of 10 cm. Where can we pla

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A concave mirror has a focal length of 10 cm. Where can we place the object so that the image formed is magnified to twice the size of object ?

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A concave mirror has a focal length of 10 cm. Where can we place the object so that the image formed is magnified to twice the size of object ?

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Text solutionVerified

Sure, here are the step-by-step solutions:

- 5 c m

and

- 15 c m

are two measurements in centimeters. To subtract these values, we need to align the digits in the ones place. Since

- 5 c m

has no ones place digit, we can add a zero in the ones place to make it easier to subtract:

- 00 - 5 c m - 15 c m

Now we can subtract each digit starting from the right: \begin{aligned} &\phantom{{}-{}}{0}\\ &-{5}{c}{m}\\ &-{1}{5}{c}{m}\\ \cline{2-3} &-{1}{0}{c}{m}\\ \end{aligned} Therefore, the difference between

- 5 c m

and

- 15 c m

is

- 10 c m

.

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Question Text	A concave mirror has a focal length of 10 cm. Where can we place the object so that the image formed is magnified to twice the size of object ?
Topic	Geometrical and Physical Optics
Subject	Physics
Class	Class 12
Answer Type	Text solution:1