The centre of the reflecting surface of a spherical mirror is called the
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___ is not related to gases.
Which of the following devices helps to maintain a potential difference across a conductor?
One Watt = ?
Knife is an example for
A charge of 2 C passes from one point to the other in a circuit. If the potential difference between the two points is 5 V, the amount of work done is
Sound CANNOT travel through
A unit of power is called a
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