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प्रश्न
Name the radiation of the electromagnetic spectrum which is used for the following:
For taking photographs of the sky during the night and foggy conditions . Give the frequency range
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उत्तर
Infrared (1011 to 5 × 1014)Hz
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संबंधित प्रश्न
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(a) target material
(b) accelerating voltage
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(d) temperature of the filament.
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(c) transfers momentum to it
(d) transfers impulse to it.
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