Which of the following is not a renewable source of energy?
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If the frequency of a sound wave of given velocity is increased , how will it affect its wavelength?
Which of the following is used to detect current in a circuit?
The energy released at the end of digestion is in the form of
The SI unit of weight is a
What of the given below devices converts chemical energy to electrical energy?
Which of the following devices helps to maintain a potential difference across a conductor?
The rate of change of velocity is called
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