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	The nature of radiations emitted by a hot body depends upon its:	A. Metarial B. Temperature C. colour D. Volume
2	A non-inertial frame of reference is one, in which	A. law of inertial is valid B. all laws of physics are the same in all frames C. a>0 or a<0 D. a=0
3	Intensity of light determines the:	A. Energy of each photon B. Number of photons C. Speed of photons D. Size of photons
4	With the help of 50 K v electron microscope, a resolution of	A. 0.5 to 1 m to possible B. 1 m to 10 m is possible C. 0.5 to 1 nm is possible D. 1 to 10 nm is possible
5	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
6	Which of the following phenomenon proves the particle nature of light	A. interference B. diffraction C. photoelectric effect D. none of these
7	Albert Einstein got the Nobel prize in physics for his explanation of photoelectric effect in	A. 1916 B. 1919 C. 1921 D. 1923
8	According to Einstein, with the great increase in the speed of the body, the relativistic mass of the body	A. Remains constant B. Decreases C. Increases to infinity D. Reduced to zero
9	In the compton's effect, it is found that the wavelength of incident x-rays is	A. greater than the wavelength of scattered x-rays B. equal to the wavelength of scattered x-rays C. less than the wavelength of scattered x-rays D. any one of these
10	G.P. Thomson observer experimentally that electrons and neutrons possess	A. particle-like properties B. wave-like properties C. neither particle nor wave like properties 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

A black body is

The general theory of relativity treats problems involving

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

The value of threshold frequency for different metals is

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

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

S.I. unit of planks constant is

When a position comes close to an electron they annihilate into

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

At the temperature, a body emits radiation which is principally

If the radius of first orbit of hydrogen atom is 0.53° A the radius of second orbit will be

A photon is considered to have

Momentum is a parameter associated with

The intensity of emitted energy (with wavelength) radiated from a black body at different temperatures was initially measured by:

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

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

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

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

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

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

Which of the following is not an example of intertial frame

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

An inertial frame is that frame in which

Compton was awarded Nobel prize in physics in

Photoelectric effect takes place with a photon of:

Intensity of light determines the:

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

Photocell is a device which converts

According to the special theory of relativity

According to the special theory of relativity, time 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

Is this page helpful?