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The sun subtends an angle of (1//2)^(@) ...

The sun subtends an angle of `(1//2)^(@)` on earth. The image of sun is obtained on the screen with the help of a convex lens of focal length 100 cm the diameter of the image obtained on the screen will be

A

18 cm

B

1 mm

C

50 cm

D

73 mm

Text Solution

Verified by Experts

The correct Answer is:
D
`D=fxxtheta`(`theta` in rad.)
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NARAYNA-RAY OPTICS AND OPTICAL INSTRAUMENTS -EXERCISE-2 (C.W)(REFRACTION THROUGH SPHERICAL SURFACES )
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  8. A convex lens of focal length f is placed somewhere in between an obje...

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  9. The distance between an object and the screen is 100cm. A lens produce...

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  13. When an object is at distances x and y from a lens, a real image and a...

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  14. Two thin convex lenses of focal lengths f(1) and f(2) are arranged coa...

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  15. A plano-convex lens, when silvered at its plane surface is equivalent ...

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  16. A thin equiconvex lens has focal length 10 cm and refractive index 1.5...

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  17. Four lenses are made from the same type of glass, the radius of curvat...

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  18. 4 A thin liquid convex lens is formed in glass. Refractive index of li...

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  19. A thin converging lens of refractive index 1.5 has a focal power of 5 ...

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  20. The focal lengths of a lens are in the ratio 8:3 when it is immersed i...

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