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A plano-convex lens of unknown material ...

A plano-convex lens of unknown material and unknown focal length is given. With the help of a spherometer we can measure the,

A

refractive index of the meterial.

B

focal length of the lens.

C

radius of curvature of the curved surface.

D

aperture of the lens.

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TARGET PUBLICATION-OPTICS-EXERCISE
  1. Focal length of a convex lens is 20 cm and its R.I. is 1.5. It produce...

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  2. An equiconvex lens has power P. It is cut into two symmetrical halves ...

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  3. A plano-convex lens of unknown material and unknown focal length is gi...

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  4. A candle placed 25 cm from a lens forms and image on a screen placed 7...

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  5. Calculate the focal length of a reading glass of a person if his dista...

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  6. A converging beam of rays is incident on a diverging lens. Having pass...

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  7. An object is located 4 m from the first of two thin converging lenses ...

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  8. A person can see clearly objects only when they lie between 50 cm and ...

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  9. Two convex lenses of focal lengths f(1)andf(2) form images with magnif...

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  10. The equiconvex lens has focal length f. If is cut perpendicular to the...

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  11. A plano-convex lens is made of material having refractive index 1.5. T...

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  12. A convex lens (with material of refractive index of 3/2) has two surfa...

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  13. A double convex lens has focal length 25 cm. The radius of curvature o...

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  14. The power of a biconvex lens is 10 dioptre and the radius of curvature...

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  15. A convex lens of glass (mu=1.5) has a focal length of 8 cm when placed...

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  16. A convex lens of glass (mu(g)=1.45) has focal length f(g) is air. The ...

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  17. A thin convex lens made from crown glass (mu=(3)/(2)) has focal f. Whe...

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  18. Two similar thin equiconvex lenses, of focal length f each, are kept c...

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  19. Two identical thin plano-convex glass lenses (refractive index 1.5) ea...

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  20. A plnao=convex lens fits exactly into a plano-concave lens. Their plan...

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