In a full wave rectifier circuit operating from 50 Hz mains freq

Subject

Physics

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

71.

In a common base amplifier, the phase difference between the input signal voltage and output voltage is

  • π/4 

  • π

  • 0

  • 0

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72.

In a full wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be

  • 50 Hz

  • 25 Hz

  • 100 Hz

  • 100 Hz


C.

100 Hz

frequency = 2 (frequency of input signal).

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73.

A nuclear transformation is denoted by X(n, α) . Which of the following is the nucleus of element X?

  • straight C presuperscript 12 subscript 6
  • straight B presubscript 5 presuperscript 10
  • straight B presubscript 5 presuperscript 9
  • straight B presubscript 5 presuperscript 9
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74.

When an unpolarized light of intensity I0 is incident on a polarizing sheet, the intensity of the light which does not get transmitted is

  • I0 /2

  • I0 /4

  • zero

  • zero

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75.

If I0 is the intensity of the principal maximum in the single slit diffraction pattern, then what will be its intensity when the slit width is doubled?

  • 2I0

  • 4I0

  • I0

  • I0

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