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

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

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Asghar Ali 03 - Mar - 2021 10 Min 50 Sec 100/120
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shamsuddin 19 - Aug - 2021 10 Min 50 Sec 75/120
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khadim Hussain 03 - Mar - 2021 10 Min 50 Sec 75/120
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Ali ahmad 19 - Jul - 2018 09 Min 44 Sec 70/120
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Aarij 08 - Dec - 2024 02 Min 25 Sec 65/120
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Waleed Ahmed 26 - Feb - 2023 10 Min 00 Sec 65/120
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Ziyad Rehman Sheikh 16 - Nov - 2022 07 Min 21 Sec 40/120
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maha 01 - Mar - 2023 04 Min 24 Sec 35/120

ECAT Physics Chapter 19 Important MCQ's

Sr.#	Question	Answer
1	According to the de-Brogile relation, an object of large mass and ordinary speed has	A. very small wavelength B. very large wavelength C. very small frequency D. all of these
2	The year when A.H. compton was awarded Nobel Prize is:	A. 1923 B. 1927 C. 1931 D. 1935
3	Electromagnetic radiation or photons interact with matter in	A. two distinct ways B. three distinct ways C. four distinct ways D. five distinct ways
4	As the light shines on the metal surface, the electrons are ejected	A. slowly B. instantaneously C. either of these D. none of these
5	Position was discovered by Carl Anderson in	A. 1920 B. 1925 C. 1928 D. 1932
6	When a high energy photon interact with a metal, which of the following effect is most likely to be taken place	A. pair production B. photoelectric effect C. Compton effect D. None of these
7	Davision and Germer performed experiment to verify	A. de-Brogile hypothesis B. theory of relativity C. Newton's law of gravitation D. Mass-energy relation
8	When a platinum wire is heated, it appears orange red at	A. 500°C B. 900°C C. 1100°C D. 1300°C
9	In process of annihilation of matter, the two photons produced move in opposite direction to converse	A. momentum B. charge C. energy D. mass
10	The concept of direction and position are purely	A. absolute B. relative C. absolute or relative 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

With the help of 50 K v electron microscope, a resolution of

Wien's constant is measured in:

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

Electromagnetic -radiation means:

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

Newton's law of motion do not hold in

The special theory of relativity is based on:

According to the special theory of relativity, time is

The special theory of relatively treats the problems involving:

The year when A.H. compton was awarded Nobel Prize is:

A photon is considered to have

Max plank received the Nobel Prize in physics for his discovery of energy quanta in

According to Einstein, with the great increase in the speed of the body the relativistic length of the body

At the temperature, a body emits radiation which is principally

The ratio of energy E to the corresponding frequency (f) of the radiation (emitted or absorbed) is called:

Position was discovered by Carl Anderson in

A bar 1.0 m in length and located along x-axix moves with a speed of 0.75 c with respect to a stationary observer. The length of the bar as measured by the stationary observer is

The photon of radio-waves has energy of about

When a platinum wire is heated, it appears white at

The length contraction happens only

S.I. unit of planks constant is

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

Albert Einstein got the Nobel prize in physics for his explanation of photoelectric effect in

Max Planck received the Nobel Prize for his discovery of energy quants in:

The positron was discovered by:

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

When a position comes close to an electron they annihilate into

The concept of direction is purely:

Wave nature of particle was proposed by

Pair production is the phenomenon in which

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

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