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12th Standard English Medium Physics Subject Dual Nature of Radiation and Matter Creative 1 Mark Questions with Solution Part - II

12th Standard

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Physics

Time : 00:30:00 Hrs
Total Marks : 5
    5 x 1 = 5
  1. If the potential difference is increased by 9 times, the de-Broglie wavelength becomes ________ times the original.

    (a)

    \(\frac{1}{3}\)

    (b)

    3

    (c)

    9

    (d)

    \(\frac{1}{9}\)

  2. Find the energy released when 5.5 g of matter is used.

    (a)

    1.6 x 108 J

    (b)

    49.5 x 1015 J

    (c)

    49.5 x 1015 J

    (d)

    1.6 x 1019J

  3. The length of a moving scale is 6 m, whose velocity is 2 x 107 m/s. Find its rest length.

    (a)

    7.6 m

    (b)

    15 m

    (c)

    3 m

    (d)

    6.013 m

  4. The highest magnification order that can be achieved using optical microscope is _________

    (a)

    60

    (b)

    2000

    (c)

    76 x 104

    (d)

    105

  5. The number of de Broglie waves of an electron in the nth orbit of an atom is ___________.

    (a)

    n

    (b)

    n-1

    (c)

    n+1

    (d)

    2n

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