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

If a material object moves with the speed of light 'C' its mass becomes

Question # 2

Converse of pair production is known as

Question # 3

The energy of photon 'E' is proported to

Question # 4

In photoelectric effect the energy of ejected electrons depend on

Question # 5

The inside cavity of the black body is

Question # 6

Photocell is a device which converts

Question # 7

If the radius of first orbit of hydrogen atom is 0.53° A the radius of second orbit will be

Question # 8

The existence of position was predicted by Dirace in

Question # 9

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

Question # 10

As the light shines on the metal surface, the electrons are ejected

Question # 11

When platinum wire is heated, then at the temperature of 500 oC, it becomes:

Question # 12

Wien's constant is measured in:

Question # 13

Max plank founded a mathematical model resulting in an equation that describes the shape of observed black body radiation curves exactly, in

Question # 14

When low energy photon interact with a metal,which of the following effect is likely to be taken place

Question # 15

According to the special theory of relativity, time is

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