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

A

Asghar Ali 03 - Mar - 2021 10 Min 50 Sec 100/120
S

shamsuddin 19 - Aug - 2021 10 Min 50 Sec 75/120
K

khadim Hussain 03 - Mar - 2021 10 Min 50 Sec 75/120
A

Ali ahmad 19 - Jul - 2018 09 Min 44 Sec 70/120
A

Aarij 08 - Dec - 2024 02 Min 25 Sec 65/120
W

Waleed Ahmed 26 - Feb - 2023 10 Min 00 Sec 65/120
Z

Ziyad Rehman Sheikh 16 - Nov - 2022 07 Min 21 Sec 40/120
M

maha 01 - Mar - 2023 04 Min 24 Sec 35/120

ECAT Physics Chapter 19 Important MCQ's

Sr.#	Question	Answer
1	According to the special theory of relativity, time is	A. absolute quantity B. not absolute quantity C. constant quantity D. none of these
2	The inside cavity of the black body is	A. painted white B. painted silver C. blackened with soot D. painted red
3	the symbol to be used in relativity problems denotes:	A. Dilated time B. Proper time C. Life time D. Half time
4	When monochromatic light is allowed to fall on cathode, it begins to emit electrons, these electrons are called	A. thermoionic electrons B. free electrons C. photoelectrons D. slow electrons
5	The analysis of the distribution of wavelengths of the radiation emitted from a hot body set the foundation of new mechanics, known as	A. classical mechanics B. Newtonian mechanics C. quantum mechanics D. statistical mechanics
6	The special theory of relatively treats the problems involving:	A. Inertial frames of reference B. Non-inertial frames C. Non-accelerated frame D. Botha (A) and (C)
7	de-Broglies hypthesis was experimentally verified by	A. Maxwell B. Compton C. Einstein D. Davison and Germer
8	Position and momentum of a particle cannot both be measured simultaneously with perfect accuracy. This is the statement of	A. photoelectric effect B. pair production C. Compton effect D. uncertainty principle
9	The positron was discovered by:	A. In cosmic radiation B. In 1932 C. By Carl Anderson D. All above
10	Momentum is a parameter associated with	A. wave motion B. particle motion C. neither wave nor particle motion D. none of these

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

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 shift refers to:

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

Which of the following phenomenon proves the particle nature of light

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

Wien's constant is measured in:

According to the Max plank, energy is redialed or absorbed in

In process of annihilation of matter, the two photons produced move in opposite direction to converse

An intertial frame of reference is a frame of reference which is

A particle having mass and charge equal to that of an electron is called:

The special theory of relativity is based on:

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

A black body is

Converse of pair production is known as

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

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

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

When a platinum wire is heated, it appears yellow at

The photoelectric effect, the maximum energy of photoelectrons depends on the

Absolute motion cannot be detected

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

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

When a platinum wire is heated, it appears white at

The whole shape of the black body spectrum for all wavelengths was explained by the formula proposed by

The mass of an object will be doubled at speed

When a platinum wire is heated, it appears orange red at

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

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

The value of threshold frequency for different metals is

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

The energy of the 4th orbit in hydrogen atom is

Prepare Complete Set Wise ECAT Pre General Science Physics Chapter 19 Dawn of Modern Physics MCQs Online With Answers

Set 1

Set 2

Set 3

Set 4

Set 5

Topic Test

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

ECAT Physics Chapter 19 Important MCQ's

Test Questions

Share your comments & questions here