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146. A tall cylinder is filled with viscous oil. A'round pebble is dropped from the top with zero initial velocity. Choose the correct plot

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146. A tall cylinder is filled with viscous oil. A'round pebble is dropped from the top with zero initial velocity. Choose the correct plot which represents the velocity (v) of the pebble as a function of time (t). (1) (2) (3) (4) 147. The working of an atomizer is based on (1) Bernoulli's principle (2) Boyle's law (3) Archimedes principle (4) Hooke's law 148. The internal energy of an ideal gas is a function of the (1) gas pressure only (2) gas temperature only (3) gas volume only (4) gas pressure and temperature successive 149. The mean free path covered by a molecule between two collisions is given as- (n is number density and d is the diameter of the molecule.) (1) (2) 2nd 2 nd 1 (3) 2 nxd (4) V2 nd2 150. A system absorbs 45 J of heat and in the process it does 11 J of work. The system follows a different thermodynamic path to the same initial and final states and does 16 J work, the heat transferred in the process is (1) 45 J (2) 18 J (3) 29 J (4) 50 J

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