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A denser medium of refractive index 1.5 ...

A denser medium of refractive index 1.5 has a concave surface of radius of curvature 12 cm. An object is situated in the denser medium at a distance of 9 cm from the pole. Locate the image due to refraction in air.

A

A real image at 8 cm

B

a virtual image at 8 cm

C

A real image at 4.8 cm

D

A virtual image at 4.8 cm

Text Solution

Verified by Experts

The correct Answer is:
D
`mu_(2)/v-mu_(1)/u=(mu_(2)-mu_(1))/R,1/v + 1.5/9=(1-1.5)/12`
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NARAYNA-RAY OPTICS AND OPTICAL INSTRAUMENTS -EXERCISE-2 (C.W)(REFRACTION THROUGH SPHERICAL SURFACES )
  1. A spherical surface of radius of curvature R separates air (refractive...

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  2. A denser medium of refractive index 1.5 has a concave surface of radiu...

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  3. The human eye can be regarded as a single spherical refractive surface...

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  4. A glass sphere (mu =1.5) of radius 20 cm has small air bubble 4 cm bel...

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  5. A spherical surface of radius R separates two media of refractive indi...

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  6. The sun subtends an angle of (1//2)^(@) on earth. The image of sun is ...

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  7. An object is placed first at infinity and then at 20 cm from the objec...

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  8. The image of a square hole in a screen illuminated by light is obtaine...

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  9. A plano-convex lens of focal length 30 cm has its plane surface silver...

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  10. The graph shows the variation of magnifictaion y'-. m produced by conv...

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  11. A convex lens of focal length f is placed somewhere in between an obje...

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

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  13. Three lenses in contact have a combined focal length of 12 cm. When th...

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  14. Arrange the following combinations in the increasing order of focal le...

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  15. A thin converging lens forms the real image of certain real object mag...

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

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

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

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

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

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