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Q. Beta rays emitted by a radioactive material are
Beta particles are fast moving electrons which are emitted by the nucleus.
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Q. When a number of resistors are connected in series in a circuit, the value of current:
Q. Which of the following objects would possess potential energy?
Q. The laws which govern the motion of planets are called ________
Q. Winding a watch is actually the process of storing
Q. Why are Polaroids used in sunglasses ?
Q. What is the function of a dynamo?
Q. Rutherford's scattering experiment proved the presence of
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