Physics
The motion of a freely falling body is an example of ________ motion.

Uniformly accelerated
Non-uniformly accelerated
Constant velocity
Constant speed

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Physics
RADAR is used for:

locating submerged submarines.
receiving a signals in a radio receiver.
locating geostationary satellites.
detecting and locating the position of objects such as Aeroplanes.

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Physics
The nature of fuse wire is

High resistance and high melting point.
Low resistance and low melting point.
High resistance and low melting point.
Low resistance and high melting point.

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Physics
A photon of X-ray has energy of 1 keV. A photon of visible radiation has energy of 3 eV. In this context, which one of the following statements is not correct?

The wavelength of X-ray photon is less than the wavelength of visible radiation photon.
Both the photons have different energies.
The speeds of both the photons in vacuum are different
The frequency of X-ray photon is higher than the frequency of visible radiation photon.

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