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Compared to infrared light, microwaves has lesser frequency.

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Important Questions on Patterns

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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
The waves used by artificial satellites for communication purposes are
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
An electromagnetic radiation is used for photography in fog.
(i) Identify the radiation.
(ii) Why is this radiation mentioned by you, ideal for this purpose?                                                       
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
The frequencies of X-rays, γ-rays and ultraviolet rays are respectively a,b and c. Then
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
The ratio of contributions made by the electric field and magnetic field components to the intensity of an EM wave is
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
Which gaseous element takes part in ozone layer formation?
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
Radio waves with frequencies higher than television signals are
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
Earth's atmosphere is richest in 
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
Which of the following rays has maximum frequency?
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
Ozone in the stratosphere is depleted by
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
The energy of the em waves is of the order of 15 keV. To which part of the spectrum does it belong ?
 
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
If E and B represent electric and magnetic field vectors of the electromagnetic wave, the direction of propagation of electromagnetic wave is along
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
The radio waves for frequency 30 MHz to 300 MHz belong to
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light

The radio waves of frequency $300\, \mathrm{MHz}$ to $3000\,\rm{MHz}$ belong to

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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
Instruments used for listening to the murmuring in the universe
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
A direct X-ray photograph of the intestines is not generally taken by radiologists because
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
A linearly polarized electromagnetic wave given as E=E0i^coskz-ωt is incident normally on a perfectly reflecting infinite wall at z=a. Assuming that the material of the wall is optically inactive, the reflected wave will be given as
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
The energy of gamma ( γ ) ray photon is Eγ and that of an X-ray photon is Ex. If the visible light photon has energy of Ev , then we can say that 
 
HARD
Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
Three observers A, B and C measure the speed of light coming from a source to be vA, vB and vC. The observer A moves towards the source and C moves away from the source at the same speed. The observer B stays stationary. Suppose the surrounding medium is water everywhere. Select the correct option(s) from the list given in that question.
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
The AM range of the radio waves has a frequency of
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Physics>Relationships>Patterns>Electromagnetic Spectrum of Light
Waves related to telecommunication are: