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Sun's diameter is 1.4 xx10^(9)m and its ...

Sun's diameter is `1.4 xx10^(9)m` and its distance from the earth is `10^(11)m` . The diameter of its image, formed by a convex lens of focal length `2m` will be

A

`0.7cm`

B

`1.4 cm`

C

`2.8 cm`

D

Zero`(i.e.,` point image )

Text Solution

Verified by Experts

The correct Answer is:
C
`theta=(AB)/(10^(11))=(A^(')B^('))/(2)implies A^(')B^(')=(2xx1.4xx10^(9))/(10^(11))=2.8`
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