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A

Our eyes can distinguish between real and virtual image

B

Virtual image can also be taken on screen

C

If the incident rays are converging at a point, then the object is real

D

None of the above

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The correct Answer is:
D
(d) Only real image can be taken on screen. Object is real only when incident ray are diverging from it. Our eyes cannot distinguish between real and virtual image.
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DC PANDEY-RAY OPTICS-Exercise
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  4. The direction of ray of light incident on a concave mirror is shown by...

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  5. Two beams of red and violet colours are made to pass separately throug...

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  6. When sun light is scatterred by minute particles of atmosphere, then t...

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  7. An object is placed at a distance u from an equiconvex lens such that ...

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  8. If the aperature of a telescope is decreased resolving power will

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  9. A telescope has an objective of focal length 100 cm and an eye-piece o...

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  10. Which one of the following is not associated with the total internal r...

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  11. The time required for the light to pass through a glass slab ( refract...

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  12. Electromagnetic radiation of frequency n, wavelength lambda, travellin...

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  13. We combined a convex lens of focal length f(1) and concave lens of foc...

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  14. Wavelength of light in vaccum is 5890 Å, then its wavelength in glass ...

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  15. Light travels in two media A and B with speeds 1.8 × 10^(8) m s^(–1) a...

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  16. The focal length of a thin convex lens for red and blue colours is 100...

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  17. Two mirrors are placed at right angle to each other. A man is standing...

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

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  19. If two mirrors are keps at 60^circ to each other, then the number of i...

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  20. If the focal length of the ey piece of the telescope is doubled, then ...

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