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A convex lens is cut into twoparts in di...

A convex lens is cut into twoparts in different ways that arearranged in four manners, as shown. Which arrangement will give maximum optical power?

A

B

C

D

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The correct Answer is:
A
Focal length is minimum in case, therefore power is maximum.
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RESONANCE-GEOMETRICAL OPTICS-Exercise
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  2. In the figure (i) a thin lens of focal length 10cm is shown. The lens ...

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  3. A convex lens is cut into twoparts in different ways that arearranged ...

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  4. The magnifying power of a telescope can be increased

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  5. In a compound microscope

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  6. The minimum magnifying power of an astronomical telescope is M. If the...

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  7. The rainbow formed after or during the rain is due to

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  8. Minimum number of prisms required to make a combination which is 'Achr...

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  9. All the listed things below are made of flint glass. Which one of thes...

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  10. An astronomical telescope has large apeture to

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  11. Which of the following is used in optical fibres?

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  12. The image formed by an objective of a compound microscope is

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  13. To get three images of a single object, one should have two plane mirr...

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  14. The angle of incidence at which reflected light is totally polarized f...

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  15. An astronomical telescope has an eyepiece of focal-length 5cm. If the ...

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  16. A ray of light travelling in air is incident at grazing incidence on a...

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  17. A beam of light is converging towards a point I on a screen. A plane g...

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  18. A prism having an apex angle of 4^@ and refractive index of 1.50 is lo...

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  19. In the given figure a plano-concave lens is placed on a paper on which...

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  20. A beam of diameter 'd' is incident on a glass hemisphere as shown in t...

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