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 mass of an object will be doubled at speed	A. 1.6 x 10⁸ms^-1 B. 2.6 X 10⁸ms^-1 C. 2.6 x 10⁷ms^-1 D. 2.6 x 10⁹ms^-1
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	the symbol to be used in relativity problems denotes:	A. Dilated time B. Proper time C. Life time D. Half time
4	Which of the following is not an example of intertial frame	A. a body placed on the surface of earth B. a body placed in a car moving with uniform velocity C. a body placed in a car moving with same acceleration D. none of these
5	The nature of radiations emitted by a hot body depends upon its:	A. Metarial B. Temperature C. colour D. Volume
6	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
7	According to the special theory of relativity, time is	A. absolute quantity B. not absolute quantity C. constant quantity D. none of these
8	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
9	Albert Einstein got the Nobel prize in physics for his explanation of photoelectric effect in	A. 1916 B. 1919 C. 1921 D. 1923
10	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

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

Newton's law of motion do not hold in

Davision and Germer performed experiment to verify

When a platinum wire is heated, it appears yellow at

The way through which electromagnetic radiations or photons interact with matter depends upon their:

Absolute motion cannot be detected

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

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

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

The unit of work function is:

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

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

A photon is considered to have

When a position comes close to an electron they annihilate into

The value of the Stephen's constant for black body radiations is given by

As the light shines on the metal surface, the electrons are ejected

When a platinum wire is heated, it appears dull red at about

Which one of the following physical quantities changes with relativistic speed

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

The inside cavity of the black body is

Position was discovered by Carl Anderson in

0.1 kg mass will be equivalent to the energy

The length contraction happens only

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

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

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

Electromagnetic -radiation means:

The energy of photon 'E' is proported to

The special theory of relativity treats problems invoving

If A represents linear momentum and c, the velocity of light, then unit of pc in international system of units is:

An inertial frame is that frame 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