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	Practically the quantity v/c is always:	A. less than one B. Equal to one C. Greater then one D. all of these
2	The energy of a photon in a beam of infrared radiation of wavelength 1240 nm is	A. 100 ev B. 10⁶e v C. 10³e v D. 1.0 e v
3	The concept of direction and position are purely	A. absolute B. relative C. absolute or relative D. none of these
4	A high temperature, the proportion of shorter wavelengths radiation, emitted by the body	A. decreases B. first increases then decreases C. increases D. any one of them
5	the dilation of time applies to the timing processes which are:	A. Physical B. Chemical C. Biological D. All of these
6	Max plank founded a mathematical model resulting in an equation that describes the shape of observed black body radiation curves exactly, in	A. 1890 B. 1895 C. 1900 D. 1905
7	The ratio of energy E to the corresponding frequency (f) of the radiation (emitted or absorbed) is called:	A. Wien's constant B. Stefen's constnat C. Planck's constant D. Boltzmann's constant
8	As compared to the distance measured by an observer on Earth, the distance from Earth to a star measured by an observer in a moving spaceship would seem:	A. Smaller B. Lerger C. Same D. Much larger
9	Pair production is the phenomenon in which	A. matter is converted into energy B. energy is converted into matter C. light is converted into electrical energy D. electrical energy is converted into light
10	When low energy photon interact with a metal,which of the following effect is likely to be taken place	A. pair production B. photoelectric C. Compton effect 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

The concept of direction and position are purely

Compton shift refers to:

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

An electron is accelerated through a potential difference of 50v. its de-Brogile wavelength is

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

The Stephen-Boltzmann law for the black body radiation is given by

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

In photoelectric effect the energy of ejected electrons depend on

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

A non-inertial frame of reference is one, in which

0.1 kg mass will be equivalent to the energy

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

Absolute motion cannot be detected

The unit of work function is:

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

When a position comes close to an electron they annihilate into

The idea of quantization of energy was proposed by:

Wien's constant is measured in:

S.I. unit of planks constant is

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

A black body is

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

Wave nature of particle was proposed by

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

Momentum is a parameter associated with

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

Practically the quantity v/c is always:

When a platinum wire is heated, it appears white at

de-Broglies hypthesis was experimentally verified by

The nature of radiations emitted by a hot body depends upon its:

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

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