CBSE Class 11 Physics Physical World MCQs

Question :  Macroscopic domain includes

a) All of the above

b) astronomical scales

c) terrestrial scales

d) phenomena at the laboratory

Answer :  All of the above

Question :  The man who is known as the Father of Experimental Physics is

a) Galileo

b) Newton

c) Albert Einstein

d) Rutherford

Answer :  Galileo

Question :  The person who has been awarded the title of the Father of Physics of 20th century is

a) Albert Einstein

b) Sir C.V. Raman

c) Madame Curie

d) Neils Bohar

Answer :  Albert Einstein

Question :  Science is exploring, ...x... and ...y... from what we see around us. Here, x and y refer to

a) experiment, predict

b) reasoning, quantitative

c) qualitative, modify

d) verification, predict

Answer :  experiment, predict

Question :  The branch of science which deals with nature and natural phenomena is called

a) Physics

b) Biology

c) Sociology

d) Civics

Answer :  Physics

Question :  Which of the following is true regarding the physical science?

a) Both

b) The study of matter are conducted at atomic or ionic levels

c) None of these

d) They deal with non-living things

Answer :  Both

Question :  The scientific principle involves in production of ultra high magnetic fields is

a) super conductivity

b) photoelectric effect

c) digital logic

d) laws of thermodynamics

Answer :  super conductivity

Question :  Louis de-Broglie is credited for his work on

a) matter waves

b) law of distribution of velocities

c) electromagnetic theory

d) theory of relativity

Answer :  matter waves

Question :  Madam Marie Curie won Nobel Prize twice which were in the field of

a) Physics and chemistry

b) Physics only

c) Chemistry only

d) Biology only

Answer :  Physics and chemistry

Question :  Scientific way of doing things involve

a) All of the above

b) hypothesising a possible theory

c) collecting data

d) identifying the problem

Answer :  All of the above

Question :  The exchange particles for the electromagnetic force are

a) photons

b) gravitons

c) gluons

d) mesons

Answer :  photons

Question :  Which of the following is the weakest force?

a) Gravitational force

b) None of these

c) Nuclear force

d) Electromagnetic force

Answer :  Gravitational force

Question : Assertion : Electromagnetic force is much stronger than the gravitational force.

Reason : Electromagnetic force dominates all phenomena at atomic and molecular scales

a) Assertion is correct, reason is correct; reason is a correct explanation for assertion.

b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion

c) Assertion is correct, reason is incorrect

d) Assertion is incorrect, reason is correct

Answer :  Assertion is correct, reason is correct; reason is a correct explanation for assertion.

Question :  When we hold a book in our hand, we are balancing the gravitational force on the book due to

a) normal force provided by our hand

b) friction force provided by our book

c) both

d) None of these

Answer :  normal force provided by our hand

Question :   Which of the following has infinite range?

a) Both

b) Electromagnetic force

c) Gravitational force

d) None of these

Answer :  Both

Question :  Which of the following statements is/are correct?

I. Strong nuclear force binds protons and neutrons in a nucleus.

II. In twentieth century, silicon chip triggered a revolutionary changes in technology of computer system.

III. The fossil fuels of the planet are dwindling fast and there is urgent need to discover new source of energy.

a) I, II and III

b) Only III

c) I and II

d) Only I

Answer :  I, II and III

Question :  The field of work of S. Chandrashekar is

a) theory of black hole

b) theory of relativity

c) Cosmic rays

d) X-rays

Answer :  theory of black hole

Question :  Who discovered X-rays?

a) Roentgen

b) Madam Curie

c) Chadwick

d) Thomson

Answer :  Roentgen

Question :  Who gave general theory of relativity?

a) Einstein

b) Marconi

c) Ampere

d) Newton

Answer :  Einstein

Question :  Which of the following is wrongly matched ?

a) Humidity-Calorimeter

b) Coulomb’s law-charges

c) Lactometer-Milk

d) Barometer-Pressure

Answer :  Humidity-Calorimeter