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(a) 5g/14
(d) The angular acceleration is non-zero and remains same.
(b) The room will be warmed up gradually
(b) 90 J
(c) 0.577
An inclined plane makes on angle of 30° with horizontal. A solid sphere rolling down this inclined plane has a linear acceleration of
(a) 5g/14
(a) 5g/14
See lessWhen a disc rotates with uniform angular velocity, which of the following is not true?
(d) The angular acceleration is non-zero and remains same.
(d) The angular acceleration is non-zero and remains same.
See lessThe door of a running refrigerator inside a room is left open. The correct statement out of the following ones is
(b) The room will be warmed up gradually
(b) The room will be warmed up gradually
See lessA Carnot engine, having an efficiency of η = 1/10 as heat engine is used as a refrigerator. If the work done on the system is 10J the amount of energy absorbed from the reservoir at lower temperature is
(b) 90 J
(b) 90 J
See lessThe efficiency of engine is η₁ at T₁ = 200°C and T1 = 0°C and η₂ at T1= 0°C and T₂ –200 K. Find the ratio of 1
(c) 0.577
(c) 0.577
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