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	As the light shines on the metal surface, the electrons are ejected	A. slowly B. instantaneously C. either of these D. none of these
2	Strictly speaking, the earth is:	A. An accelerated frame of reference B. A non-inertial frame of reference C. An inertial frame of reference D. ^{A non-accelerated frame of reference}
3	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
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	The stopping voltage for a certain metal is 100 volts, then the work function for the cathode plate is	A. 100 J B. 1.6 x 10^-17J C. 100 eV D. 1.6 x 10^-17eV
6	Compton shift refers to:	A. Photon B. Meson C. Proton D. Positron
7	From the theory of relativity, momentum p of the photon is related to energy as	A. p = hfc B. p = hf/c C. p = f(hc,f) D. p = cf/h
8	An electron is accelerated through a potential difference of 50v. its de-Brogile wavelength is	A. 1.66 x 10^-29m B. 1.74 x 10^-10cm C. 17.4 x 10^-6m D. 1.74 x 10^-10m
9	The year when A.H. compton was awarded Nobel Prize is:	A. 1923 B. 1927 C. 1931 D. 1935
10	If a material object moves with the speed of light 'C' its mass becomes	A. Equal to its rest mass B. Four times of its rest mass C. Double of its rest mass D. Infinite

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

Practically the quantity v/c is always:

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

de-Broglies hypthesis was experimentally verified by

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

There is no way to detect:

The concept of direction is purely:

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

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

Victor de-Brogile received the Nobel prize in physics in

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

According to the special theory of relativity, time is

In photoelectric effect the energy of ejected electrons depend on

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

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

When a platinum wire is heated, it appears yellow at

The idea of quantization of energy was proposed by:

Absolute motion cannot be detected

The value of threshold frequency for different metals is

The stopping voltage for a certain metal is 100 volts, then the work function for the cathode plate is

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

The length contraction happens only

The energy of a photon is represented by

A photon is considered to have

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

Which of the following is not an example of intertial frame

The general theory of relativity treats problems involving

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

A bar 1.0 m in length and located along x-axix moves with a speed of 0.75 c with respect to a stationary observer. The length of the bar as measured by the stationary observer is

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

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