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	Intensity of light determines the:	A. Energy of each photon B. Number of photons C. Speed of photons D. Size of photons
2	When the atomic particle are moving with velocities approaching that of light:	A. Newton's laws become valid B. Relativistic effects become prominent C. Botha(A) and (B) are valid D. Neither (A)nor (B)
3	Compton was awarded Nobel prize in physics in	A. 1921 B. 1923 C. 1925 D. 1927
4	The photoelectric effect, the maximum energy of photoelectrons depends on the	A. particular metal surface B. frequency of incident light C. both of them D. none of them
5	The length contraction happens only	A. Opposite to the direction of motion B. along the direction of motion C. perpendicular to the direction of motion D. In any direction
6	When a platinum wire is heated, it appears orange red at	A. 500°C B. 900°C C. 1100°C D. 1300°C
7	Photocell is a device which converts	A. chemical energy into electrical energy B. electrical energy into light energy C. heat energy into electrical energy D. light energy into electrical energy
8	As the light shines on the metal surface, the electrons are ejected	A. slowly B. instantaneously C. either of these D. none of these
9	If A represents linear momentum and c, the velocity of light, then unit of pc in international system of units is:	A. Newton B. Joule C. Joule-Sec D. Joule-s^-1
10	Compton derived an expression to find compton shift by applying to the process, the law of conservation of:	A. Energy only B. Momentum only C. Mass only D. Charge only

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 analysis of the distribution of wavelengths of the radiation emitted from a hot body set the foundation of new mechanics, known as

Photoelectric effect takes place with a photon of:

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

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

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

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

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

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

There is certain frequency below which no electrons are emitted from the metal surface, this frequency is known as

The photon of radio-waves has energy of about

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

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

Electromagnetic -radiation means:

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

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

Compton was awarded Nobel prize in physics in

the symbol to be used in relativity problems denotes:

The emission of electrons from a metal surface when exposed to light of suitable frequency is called the

Davision and Germer performed experiment to verify

Momentum is a parameter associated with

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

The mass 'm' of a body moving at 0.8 c (whose rest mass is mo) becomes

The special theory of relativity is based on the

Current, voltage, resistance measuring circuit is connected with the galvanometer with the help of switch, known as

0.1 kg mass will be equivalent to the energy

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

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

The length contraction happens only

Strictly speaking, the earth is:

In photoelectric effect the energy of ejected electrons depend on

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

Is this page helpful?

Share your comments & questions here