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The colours of stars depend on their
GK
- May 26, 2020
The damage of the human body due to radiation (X-rays or y-rays etc.) is measured in
GK
- May 26, 2020
The device used for measuring the wavelength of X-rays is
The device used for measuring the wavelength of X-rays is
A television channel is characterised by
The waveform of a certain signal can be studied by
The height of a geostationary satellite from the Earth’s surface is approximately
Flight Recorder is technically called
The minimum number of geostationary satellites needed for uninterrupted global coverage is
The sharpness of a television image is termed as its
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