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Physics Test 20...

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  • Question 1
    4 / -1

    In an oscillating spring mass system, a spring is connected to a box filled with the sand. As the box oscillates, sand leaks slowly out of the box vertically so that the average frequency ω (t) and average amplitude A (t) of the system changes with time t. Which of the following options systemically depicts these changes correctly?

  • Question 2
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    At absolute zero temperature may be defined as that temperature at which

  • Question 3
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    The restoring force in a simple harmonic motion is _________ in magnitude when the particle is instantaneously at rest.

  • Question 4
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    In an interference experiment monochromatic light is replaced by white light, we will see:

  • Question 5
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    A photodiode is used preferably in

  • Question 6
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    Which one of the following statements is false?

  • Question 7
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    Which one of the following phenomena is notexplained by Huygen’s construction ofwavefront?

  • Question 8
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    The truth table given below is for a gate with A and B as inputs and C as output. Which of the gates will obey this truth table?

  • Question 9
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    A light ray falls on a rectangular glass slab as shown. The index of refraction of the glass, if total internal reflection is to occur at the vertical face, is

  • Question 10
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    Just before setting, the sun may appear to be elliptical. This happens due to:

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