ECAT Pre Computer Science Chapter 19 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 19 Dawn of Modern Physics

Try The MCQ's Test For ECAT Physics Chapter 19 Dawn of Modern Physics

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ECAT Physics Chapter 19 Dawn of Modern Physics

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Question # 1

G.P. Thomson observer experimentally that electrons and neutrons possess

Question # 2

A photon is considered to have

Question # 3

The stopping voltage for a certain metal is 100 volts, then the work function for the cathode plate is

Question # 4

The threshold frequency of sodium is 6 x 106MHz. The cut-off wavelength for this metal will be

Question # 5

The concept of direction is purely:

Question # 6

A high temperature, the proportion of shorter wavelengths radiation, emitted by the body

Question # 7

There is no way to detect:

Question # 8

A particle of mass 5.0 mg moves with a speed of 8.0 m/s. Its de-Brogile wavelength is

Question # 9

The energy of the 4th orbit in hydrogen atom is

Question # 10

Current, voltage, resistance measuring circuit is connected with the galvanometer with the help of switch, known as

Question # 11

The Nobel Prize on the explanation of photoelectric effect was awarded to:

Question # 12

When the atomic particle are moving with velocities approaching that of light:

Question # 13

The energy of photon 'E' is proported to

Question # 14

the dilation of time applies to the timing processes which are:

Question # 15

Newton's law of motion do not hold in

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