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	An inertial frame is that frame in which	A. a>0 B. a=0 C. a<0 D. none of these
2	According to the special theory of relativity, a moving clock	A. runs faster B. runs slower C. neither runs faster nor slower D. all of these
3	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
4	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
5	According to the Max plank, energy is redialed or absorbed in	A. discrete packets B. continuous waves C. either of them D. none of these
6	Wien's constant is measured in:	A. Metre per kelviin B. Metre kelvin C. Kelvin per meter D. Joules
7	The mass 'm' of a body moving at 0.8 c (whose rest mass is mo) becomes	A. 2 mo B. 1.67 mo C. 0.67 mo D. 2.67 mo
8	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
9	Absolute motion cannot be detected	A. in its own frame of references B. in a different frame of references C. both in its frame and different frame of references D. none of these
10	The value of threshold frequency for different metals is	A. different B. same C. may be different or may be same 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

Photoelectric effect takes place with a photon of:

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

Due to relative motion of observer and the frame of reference of events, time always:

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

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

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

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

The unit of work function is:

When a platinum wire is heated, it appears white at

The value of threshold frequency for different metals is

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

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

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

Position and momentum of a particle cannot both be measured simultaneously with perfect accuracy. This is the statement of

Compton was awarded Nobel prize in physics in

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

The Nobel Prize on the explanation of photoelectric effect was awarded to:

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

According to the de-Brogile relation, an object of large mass and ordinary speed has

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

Pair production is the phenomenon in which

According to the special theory of relativity

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

In photoelectric effect the energy of ejected electrons depend on

The mass of an object will be doubled at speed

The energy of the 4th orbit in hydrogen atom is

The photon of radio-waves has energy of about

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

Intensity of light determines the:

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

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