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QAIPMT-2009-Ph-2141: NEET 2009 Physics - Class 11 AIPMT-2009-Ph-2141 Solution: A transistor is operated in common-emitter configuration at…
A transistor is operated in common-emitter configuration at such that a change in the base current from to produces a change in the collector current from 5 mA to 10 mA. The current gain is 100 150 50 75
Multiple Choice Options
- A 30 J
- B 40 J
- C 10 J
- D 20 J
Step-by-Step Verified Solution
Initial velocity u = 20 m/s; m = 1 kg
Kinetic energy = maximum potential energy
Initial kinetic energy = 1 2 _ 1 _ 20 2 = 200 J
Mgh (max) = 200 J
_ h = 20 m
The height travelled by the body, h' = 18 m
_ Loss of energy due to air friction = mgh � mgh'
_ Energy lost = 200 J � 1 _ 10 _ 18 J = 20 J.