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Physics Test - 12

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Physics Test - 12
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  • Question 1
    1 / -0
    In the given (V – T) diagram, what is the relation between pressures P1 and P2?
  • Question 2
    1 / -0
    A source of unknown frequency gives 4 beats/s, when sounded with a source of known frequency 250 Hz. The second harmonic of the source of unknown frequency gives five beats per second, when sounded with a source of frequency 513 Hz. The unknown frequency is
  • Question 3
    1 / -0
    A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the bulb decreases when
  • Question 4
    1 / -0
    The internal resistance of a 2.1 V cell which gives a current of 0.2 A through a resistance of 10 Ω is
  • Question 5
    1 / -0
    A glass capillary tube is of the shape of truncated cone with an apex angle  so that its two ends have cross sections of different radii. When dipped in water vertically, water rises in it to a height h, where the radius of its cross section is b. If the surface tension of water is S, its density is ρ, and its contact angle with glass is θ, the value of h will be (g is the acceleration due to gravity)
  • Question 6
    1 / -0
    A wave travelling in the +ve x-direction having displacement along y-direction as 1 m, wavelength 2π m and frequency of 1/π Hz is represented by
  • Question 7
    1 / -0

  • Question 8
    1 / -0
    For a normal eye, the cornea of eye provides a converging power of 40 D and the least converging power of the eye lens behind the cornea is 20 D. Using this information, the distance between the retina and the cornea - eye lens can be estimated to be
  • Question 9
    1 / -0
    In a common emitter (CE) amplifier having a voltage gain G, the transistor used has transconductance 0.03 mho and current gain 25. If the above transistor is replaced with another one with transconductance 0.02 mho and current gain 20, the voltage gain will be
  • Question 10
    1 / -0
    The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?
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