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Electromagnetic waves used in RADAR are:
Answer: B. X-rays Electromagnetic waves used in RADAR are x-rays.
Answer: B. X-rays
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Which of the following is longest electromagnetic wave?
Answer: D. Radiowaves Radiowaves is longest electromagnetic wave.
Answer: D. Radiowaves
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Which of the following is shortest electromagnetic wave?
Answer: A. y-rays y-rays is the shortest electromagnetic wave.
Answer: A. y-rays
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Field carried by electromagnetic wave is
Answer: C. Both A and B. Field carried by electromagnetic wave is both electric and magnetic only.
Answer: C. Both A and B.
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Light beam which is highly directional, is called :
Answer: D. Laser Light beam which is highly directional, is called laser.
Answer: D. Laser
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Infra-red spectrum lies between:
Answer: A. Radiowave and microwave region Infra-red spectrum lies between radiowave and microwave region.
Answer: A. Radiowave and microwave region
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The electromagnetic waves used in the telecommunication are:
Answer: B. Infra-red The electromagnetic waves used in the telecommunication are infra-red.
Answer: B. Infra-red
See lessThe electromagnetic waves used in the telecommunication are infra-red.
Which has the longest wavelength ?
Answer: C. Ultraviolet ray Ultra-violet ray has the longest wavelength.
Answer: C. Ultraviolet ray
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Among the following, longest wave is:
Answer: A. Radiowave Among the following, longest wave is radiowave.
Answer: A. Radiowave
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Red light differs from blue light in its v
Answer: B. Frequency Red light differs from blue light in its frequency.
Answer: B. Frequency
See lessRed light differs from blue light in its frequency.