Physical World Test

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Physical World Test - 3

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following statements is correct?

A
Newton belonged to U.K., who discovered law of gravitation.

B
Einstein belonged to England, who discovered laws of photoelectric effect.

C
John Bardeen belonged to France, who discovered transistors.

D
W.K. Roentgen belonged to Holland, who discovered X-rays.

Solution
Question 2
4 / -1

Which of the following statements is correct?

A
Aeroplane is based on Newton’s laws of motion and steam engine on Bernoulli's theorem.

B
Hydroelectric power is based on law of thermodynamics and rocket propulsion on Bernoulli’s theorem.

C
Computers are based on digital logic of electronic circuits, while electric generator on Faraday’s laws of electromagnetic induction.

D
Nuclear reactor is based on law of thermodynamics and sonar on optical interference.
Solution
Aeroplane is based on Bernoulli's theorem and steam engine on laws of thermodynamics.
Hence, option (a) is incorrect.
Hydroelectric power is based on conversion of gravitational potential energy into electrical energy.
Hence, option (b) is incorrect.
Computers are based on digital logic of electronic circuits while electric generator on Faraday's laws of electromagnetic induction.
Hence, option (c) is correct.
Nuclear reactor is based on controlled nuclear fission and sonar on reflection of ultrasonic waves.
Hence, option (d) is incorrect.
Question 3
4 / -1

Who was the first to introduce the concept of antiparticle theoretically?

A
Niels Bohr

B
Ernest Rutherford

C
Albert Einstein

D
Paul Dirac

Solution

The concept of antiparticle was first introduced theoretically by Paul Dirac in 1930.
Question 4
4 / -1

Sir C.V. Raman got Nobel Prize in physics for

A
refraction of light

B
reflection of light

C
scattering of light

D
dispersion of light

Solution

Sir C.V. Raman got Nobel prize for Raman effect, which deals with scattering of light.
Question 5
4 / -1

Which of the following does not depict the correct link between technology and physics?

A
Photocell - Photoelectric effect

B
Rocket propulsion - Law's of thermodynamics

C
Optical fibres - Total internal reflection of light

D
Fusion test reactor - Magnetic confinement of plasma
Solution
Photocells are based on the Photoelectric effect of light.
Rocket propulsion is based on Newton's law of motion and not on the laws of thermodynamics.
Optical fibres are working according to the important property of light which is a total internal reflection of light.
The fusion test reactor is functioning with magnetic confinement of the plasma. The fusion test reactor was a popular experiment related to magnetic plasma.
Therefore, statement B is saying the incorrect link between technology and physics.
Question 6
4 / -1

Which year was declared as International Year of Physics?

A
2002

B
2003

C
2005

D
2007

Solution

The year 2005 was declared as International Year of Physics.
Question 7
4 / -1

Generation, propagation and detection of electromagnetic waves is the basis of

A
lasers

B
reactors

C
radio and television

D
computer

Solution

Generation, propagation and detection of electromagnetic waves is the basis of radio and television.
Question 8
4 / -1

Lightning was discovered by

A
Ohm

B
Thomson

C
Franklin

D
Faraday

Solution

Lighting was discovered by Franklin.
Question 9
4 / -1

What is full form of GMRT?

A
Ground Mobile Receive Terminal

B
Geometric Mean Reciprocal Titer

C
Giant Metrewave Radio Telescope

D
General Maintenance and Repair Technician

Solution

Giant Metrewave Radio telescope (GMRT).
Question 10
4 / -1

Which of the following statements is incorrect?

A
Bohr gave theory of hydrogen atom and Yukawa, the theory of nuclear forces

B
Law of gravitation was discovered by Newton and principle of inertia by Galileo

C
Laws of photoelectric effect were discovered by Einstein and laws of electromagnetic induction by Faraday

D
Neutron was discovered by J.J. Thomson and electron was discovered by James Chadwick

Solution

Neutron was discovered by James Chadwick and electron was discovered by J.J. Thomson.

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Re-Attempt Weekly Quiz Competition

Physical World Test - 3

Result

Physical World Test - 3

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SHARING IS CARING

Question 1

Newton belonged to U.K., who discovered law of gravitation.

Einstein belonged to England, who discovered laws of photoelectric effect.

John Bardeen belonged to France, who discovered transistors.

W.K. Roentgen belonged to Holland, who discovered X-rays.

Solution

Question 2

Aeroplane is based on Newton’s laws of motion and steam engine on Bernoulli's theorem.

Hydroelectric power is based on law of thermodynamics and rocket propulsion on Bernoulli’s theorem.

Computers are based on digital logic of electronic circuits, while electric generator on Faraday’s laws of electromagnetic induction.

Nuclear reactor is based on law of thermodynamics and sonar on optical interference.

Solution

Question 3

Niels Bohr

Ernest Rutherford

Albert Einstein

Paul Dirac

Solution

Question 4

refraction of light

reflection of light

scattering of light

dispersion of light

Solution

Question 5

Photocell - Photoelectric effect

Rocket propulsion - Law's of thermodynamics

Optical fibres - Total internal reflection of light

Fusion test reactor - Magnetic confinement of plasma

Solution

Question 6

2002

2003

2005

2007

Solution

Question 7

lasers

reactors

radio and television

computer

Solution

Question 8

Ohm

Thomson

Franklin

Faraday

Solution

Question 9

Ground Mobile Receive Terminal

Geometric Mean Reciprocal Titer

Giant Metrewave Radio Telescope

General Maintenance and Repair Technician

Solution

Question 10

Bohr gave theory of hydrogen atom and Yukawa, the theory of nuclear forces

Law of gravitation was discovered by Newton and principle of inertia by Galileo

Laws of photoelectric effect were discovered by Einstein and laws of electromagnetic induction by Faraday

Neutron was discovered by J.J. Thomson and electron was discovered by James Chadwick

Solution

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