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In optical instruments, the lenses are u...

In optical instruments, the lenses are used to form images by

A

reflection

B

refraction

C

dispersion

D

scattering

Text Solution

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The correct Answer is:
B
Lens are used to form images by refraction.
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MCGROW HILL PUBLICATION-REFRACTION OF LIGHT-HIGHER ORDER THINKING QUESTIONS
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  5. Refractive index is minimum for

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  6. Refractive index is maximum for

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  7. The value of refractive index of diamond is

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  8. If d is the real path length, then the optical path length (in medium ...

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  9. If mu(1),mu(2) are refractive indices of a body and its surrounding me...

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  10. Refractive index (mu) of a medium depends upon

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  11. With increase in temperature of the medium, its refractive index

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  13. In terms of wavelength of light (lamda), intensity (I) of scattered li...

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  14. The blue colour of sky can be explained on the basis of

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  15. Which of the following physical quantities change during refraction of...

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  16. Which of the following figures shows a correct representations of devi...

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  17. A completely transparent material will be invisible in vacuum when its...

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  18. A tank of height 50 m is filled with oil fully. If the bottom of the t...

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  19. The time taken by light to cross a glass slab of thickness 4 mm and re...

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  20. Two lenses of power 2.5 D and 1.5 D are joined together. The power of ...

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  21. The focal length of a glass lens in air is f. When immersed in water (...

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