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A liquid in a beaker has temperature the...

A liquid in a beaker has temperature `theta(t)` at time t and `theta_0` is temperature of surroundings, then according to Newton's law of cooling the correct graph between `log_e( theta-theta_0)` and t is :

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SL ARORA-Thermal Properties of Matter-Exercise
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  2. If a piece of metal is heated to temperature theta and the allowed to ...

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  4. A pressure cooker reduces cooking time because

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