ECAT Pre General Science Chapter 19 online mcq test with answers for Physics chapter 19 (Dawn of Modern Physics)

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ECAT Physics Chapter 19 Important MCQ's

Sr.#	Question	Answer
1	The energy of photon 'E' is proported to	A. The magnetic field H B. The electric field E C. Both the electric and magnetic field H and E D. Frequency
2	If a body reaches a speed equal to the speed of light, then its mass will became	A. zero B. very small C. infinity D. none of these
3	The year when A.H. compton was awarded Nobel Prize is:	A. 1923 B. 1927 C. 1931 D. 1935
4	Due to relative motion of observer and the frame of reference of events, time always:	A. Dilates itself B. Contracts itself C. Stretches itself D. Both (A) and (C)
5	The nature of radiations emitted by a hot body depends upon its:	A. Metarial B. Temperature C. colour D. Volume
6	The special theory of relativity treats problems invoving	A. inertial frame of references B. accelerating frame of references C. both of these D. none of these
7	Victor de-Brogile received the Nobel prize in physics in	A. 1925 B. 1929 C. 1932 D. 1935
8	Compton studied the scattering of x-rays by loosely bound electrons from:	A. NaCl crystal B. Graphite crystal C. Zirconia D. Copper crystal
9	The general theory of relativity treats problems involving	A. inertial frame of references B. accelerating frame of references C. both of these D. none of these
10	When a position comes close to an electron they annihilate into photons such that	A. each photon has energy 0.51 Me v B. each photon has energy 1.02 Me v C. each photon has energy 0.25 Me v D. none of these

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ECAT Pre General Science Physics Chapter 19 MCQ Test With Answer

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

ECAT Pre General Science Physics Chapter 19 Dawn of Modern Physics

Compton studied the scattering of x-rays by loosely bound electrons from:

From the theory of relativity, momentum p of the photon is related to energy as

de-Broglies hypthesis was experimentally verified by

The value of the plank's constant 'h' is given by

The mass of an object will be doubled at speed

The location and speed anywhere on earth can now be determined using relativistic effects by NAVISTAR to an accuracy of

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

When platinum wire is heated, it appears cherry red at

The energy of a photon in a beam of infrared radiation of wavelength 1240 nm is

The inside cavity of the black body is

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

According to the electromagnetic wave theory of light, increasing the intensity of incident light should increase the

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

An inertial frame is that frame in which

If a body reaches a speed equal to the speed of light, then its mass will became

The concept of direction and position are purely

In the compton's effect, it is found that the wavelength of incident x-rays is

The special theory of relatively treats the problems involving:

Momentum is a parameter associated with

When a platinum wire is heated, it appears dull red at about

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

Position was discovered by Carl Anderson in

When a platinum wire is heated, it appears yellow at

Strictly speaking, the earth is:

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

The special theory of relativity is based on the

the symbol to be used in relativity problems denotes:

The positron was discovered by:

Compton derived an expression to find compton shift by applying to the process, the law of conservation of:

A black body is

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Top Scorers Of ECAT Pre General Science Physics Chapter 19 Dawn of Modern Physics MCQ`s Test

ECAT Physics Chapter 19 Important MCQ's

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