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  • Question 1
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    A coil having 100 turns and area of 0.001 m2is free to rotate about an axis. The coil is placed perpendicular to magnetic field of 1.0 wb⁄m2. The resistance of the coil is10Ω.If the coil is rotated rapidly through an angle of 180o, how much charge will flow through the coil?

  • Question 2
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    Two electric bulbs rated P1watt V volt, and P2watt V volt are connected in parallel, and applied across V volt. The total power will be

  • Question 3
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    Black body emits the radiation of maximum intensity 5000 A0, when its temperature is 12270C. If its temperature is increased by 10000C, what is the maximum intensity of emitted radiation?

  • Question 4
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    The thermo emf produced in a thermocouple is 3μV/oC. If the temperature of the cold junction is 20oC and the thermo emf is 0.3 mV, the temperature of the hot junction is

  • Question 5
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    Two particles start simultaneously from the same point and move along two straight lines, one with uniform velocity u and the other from rest with uniform acceleration f. Let α be the angle between their directions of motion. The relative velocity of the

    second particle w.r.t. first is least after a time of

  • Question 6
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    Which of the following laws states that good absorbers of heat are good emitters?

  • Question 7
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    A nucleus decays by β + emission, followed by γ -emission. If the atomic and mass numbers of the parent nucleus are Z and A, respectively, then the corresponding numbers for the daughter nucleus are

  • Question 8
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    An engine pumps up 100 kg of water through a height of 10 m in 5s. Given that the efficiency of engine is 60%. If g = 10 ms-2, the power of the engine is :

  • Question 9
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    Two bodies of masses m and 4m are moving with equal momentum. The ratio of their kinetic energy is

  • Question 10
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    A force 'F' is given by F = at + bt2, where 't' is the time. What are the dimensions of 'a' and 'b', respectively?

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