Which of the following cannot be used for making lenses?
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What is the SI unit of frequency?
The shortest distance measured from the initial to the final position of an object is known as the _________________.
A ball rolling along the ground gradually slows down and finally comes to rest is due to ________.
If the Distance-Time graph is a straight inclined line then it represents _______________.
The solubility of a gas in a liquid is
The solubility of a gas in a liquid is directly and inversely proportional to pressure and temperature respectively.
In a _________ the wave particles of the medium vibrate in a direction perpendicular to the direction of wave propagation
The angle between the __________and the incident ray is called the angle of incidence.