Physics Part 1 Online Quiz


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Following quiz provides Multiple Choice Questions (MCQs) related to Physics. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 1 - Which among the following correctly defines the ‘nuclear force?’

A - It is repulsive

B - It is attractive

C - It is neutral

D - a & b both

Answer : D

Explanation

Nuclear force is the force between protons and neutrons.

Q 3 - The sound frequency lesser than the audible range i.e. (20 Hz) is known as …

A - Ultrasonic

B - Infrasonic

C - Hypersonic

D - Hyposonic

Answer : B

Explanation

Anything less than the frequencies of audible sound is known as infrasonic.

Answer : B

Explanation

N/A

Q 5 - The exchange of thermal energy between two physical systems is known as …

A - Heat Transfer

B - Heat exchange

C - Heat share

D - Temperature distribution

Answer : A

Explanation

The rate of heat transfer depends on the temperature differences between two bodies and also on the properties of intervening medium.

Q 6 - Consider the following statements:

1. A thermocouple consists of two wire legs, which are made from different metals.

2. A thermocouple is a sensor, which is used to measure temperature.

Choose the correct answer from the codes given below:

A - Only 1

B - Only 2

C - Both

D - Neither 1 nor 2

Answer : C

Explanation

The wire legs of a thermocouple are welded together at one end, which creates a junction where temperature is measured.

Q 7 - Speed of sound is maximum in …

A - Liquid

B - Solid

C - Gas

D - It remains same in all mediums

Answer : B

Explanation

Speed of sound in iron is 5,120 m/s.

Q 8 - 181. ………………………. First said that atom is indivisible.

A - Berzelius

B - Dalton

C - Rutherford

D - Avogadro

Answer : B

Explanation

John Dalton was an English chemist, physicist, and meteorologist who had developed the atomic theory.

Q 10 - Which among the following colors has the maximum refractive index?

A - Red

B - Green

C - Purple

D - Yellow

Answer : C

Explanation

N/A

Answer : A

Explanation

Pyrometer is an instrument used to measure distant temperature.

Answer : D

Explanation

VHF stands for Very High Frequency.

Q 13 - Consider the following statements:

1. Comparatively, the speed of sound is high in humid air.

2. Comparatively, the speed of sound is less in dry air.

Choose the correct answer from the codes given below:

A - Only 1

B - Only 2

C - Both

D - Neither 1 nor 2

Answer : C

Explanation

Speed of sound varies because of the density difference.

Q 14 - One feet is equal to …

A - 0.3 meter

B - 0.6 meter

C - 1.2 meter

D - 1.3 meter

Answer : A

Explanation

N/A

Q 15 - Consider the following statements:

1. The radioactivity element ‘radium’ was discovered by Robert Pierre and his wife Madam Curie.

2. Rutherford first discovered the rays emitted by radioactivity.

Choose the correct answer from the codes given below:

A - Only 1

B - Only 2

C - Both

D - Neither 1 nor 2

Answer : C

Explanation

N/A

Q 16 - Who had invented ‘Jet Engine?’

A - Whittle

B - Gason

C - Binet

D - Martagnier

Answer : A

Explanation

Sir Frank Whittle had first invented the jet engine.

Answer : A

Explanation

Cardiograph is an instrument that measures heartbeat.

Q 18 - Consider the following statements:

1. According to quantum theory, light is considered as a bundle of energy called as photon.

2. Speed of light is first measured by Roemer.

Choose the correct answer from the codes given below:

A - Only 1

B - Only 2

C - Both

D - Neither 1 nor 2

Answer : C

Explanation

Roemer first measured the speed of light in 1678.

Q 19 - Who first invented ‘Electric Motor (DC)?’

A - Seeley

B - Sturgeon

C - Brugnatelli

D - Martagnier

Answer : B

Explanation

The first commutator DC electric motor capable of turning machinery was invented in 1832 by the British scientist William Sturgeon.


physics_part1_online_quiz.htm

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