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It is found that all electromagnetic sig...

It is found that all electromagnetic signals sent from P towards Q reach point R. The speed of electromagnetic signals in glass cannot be

A

`10^8 m//s`

B

`2.4 xx 10^8 m//s`

C

`8 xx 10^7 m//s`

D

`14 xx 10^7 m//s`

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TARGET PUBLICATION-OPTICS-EXERCISE
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  2. An experiment needs to heat a small sample to 700 K, but the only avai...

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  3. It is found that all electromagnetic signals sent from P towards Q rea...

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  6. A ray of light passes through four transparent media wit refractive in...

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  7. A light beam is incident at an angle twice the angle twice the angle ...

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  8. A ray of light strikes a tansparent rectangular slab (of refractive in...

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  9. According to Cartesian sign convention, in ray optics

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  10. The power of plane mirror is .

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  11. A beam of light from a source L is incident normally on a plane mirror...

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  12. For concave mirror, if the object is at the focusn f, the image is

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  13. A spherical mirror is obtained as shown in the figure from a hollow gl...

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  14. Which of the following statements is incorrect?

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  15. A concave mirror of focal length f (in air) is immersed in water (mu=(...

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  16. An object is placed on the principal axis of a concave mirror at a dis...

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  17. An object is placed at a distance of 40 cm from concave mirror of foca...

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  18. A linear object of heigth 10 cm is kept in front of concave mirror of ...

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  19. An infinitely long bar lies alont the adis of cancave mirror of focal...

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  20. A person wants a real imag of his own, 3 times enlarged. Where should ...

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