NEET Physics: Questions 424 - 428 of 2099
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Question number: 424
Electrons move away from a low potential to high potential region.
because electrons have negative charge
|a.||Ꭺ is false but Ꭱ is true|
|b.||Both Ꭺ and Ꭱ are false|
|c.||Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ|
|d.||Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ|
Question number: 425
Two capacitors of capacitances 3µF and 6µFare charged to a potential of 12V each. They are now connected to each other, with the positive plate of each joined to the negative plate of the other. The potential difference across each will be
Question number: 426
Question number: 427
In an experiment for measurement of young’s modulus, following readings are taken. Load = 3.00 kg, length = 2.820 m, diameter - 0.041 cm and extension = 0.87. Determine the percentage error in the measurement of Y.
Question number: 428
particle of mass m is moving in a circular path of constant radius r such that its centripetal acceleration ac is varying with time t as ac = k 2 rt 2, where k is a constant. The power delivered to the particle by the force acting on it will be
mk 2 t 2 r
mk 2 t 2 r 2
mk 2 r 2 t
m 2 k 2 t 2 r 2