- Physics Notes for UPSC IAS Prelims (Part II)
- Physics - Home
- Physics - Introduction
- Physics - Branches
- Physics - Acoustics
- Physics - Biophysics
- Physics - Econophysics
- Physics - Geophysics
- Physics - Nanotechnology
- Physics - Neurophysics
- Physics - Psychophysics
- Physics - Astrophysics
- Physics - Measurement Units
- Major Instruments & Their Uses
- Inventions and Inventors in Physics
- Physics - Timeline in Physics
- Physics - Unsolved Problems
- Physics - Terminologies in Physics
- Major Theories and Laws in Physics
- Physics - Nobel Prize in Physics
- Physics - Awards Given in Physics
- Scientific Units Named After Inventors
- Physics - Top Institutes
Physics Part 2 Online Quiz
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.
Q 1 - The amount of time that the sun’s rays take to reach on the earth is about …
Answer : B
Explanation
N/A
Q 2 - Which among the following lights has the highest amount of energy?
Answer : A
Explanation
N/A
Answer : D
Explanation
It was Heinrich Hertz who had first noticed the radar system; however, later (in 1922), Albert H. Taylor and Leo C. Young at the U.S. Naval Aircraft Radio Laboratory had invented the modern radar system.
Q 4 - Which among the following influences the loudness of sound?
Answer : B
Explanation
Amplitude affects only volume and not the pitch.
Q 5 - The exchange of thermal energy between two physical systems is known as …
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 - An orbital period of geostationary satellite is …
Answer : C
Explanation
The rotational period of the geostationary satellite is same as of the earth.
Answer : D
Explanation
Molecules of matter are the carrier for sound wave; since, it is not present in vacuum, therefore, sound waves do not travel in vacuum.
Q 8 - Breathing at the higher altitude is always difficult because …
A - The temperature is too cold
B - The air pressure is very high
Answer : C
Explanation
The amount of oxygen gradually decreases with increasing altitude and air pressure also decreases therefore, it is difficult to breath.
Q 9 - Consider the following statements:
1. Converging lenses have negative optical power.
2. The diverging lenses have positive optical power.
Choose the correct answer from the codes given below:
Answer : D
Explanation
Converging lenses have the positive optical power whereas the diverging lenses have the negative optical power.
Answer : B
Explanation
It was Georg Simon Ohm who first conceptualized the law of electric resistance.
Q 12 - Which among the following is an electromagnetic wave?
Answer : D
Explanation
Light wave does not need any medium to travel; it travels in vacuum as well.
Q 13 - The Branch of Physics that studies the production and properties of sound is known as:
Answer : C
Explanation
Acoustics is the study of sound including its production and properties.
Q 14 - The force of liquid to keep something afloat is known as:
Answer : B
Explanation
It is because of buoyancy force, any object float on the water.
Q 15 - Which among the following is used to measure electric current?
Answer : A
Explanation
N/A
Answer : A
Explanation
N/A
Answer : A
Explanation
Seymour Cray was the first who acted to materialize the idea of supercomputer in 1960s.
Q 18 - Which among the following is used to measure heat radiation?
Answer : C
Explanation
N/A
Q 19 - Consider the following statements:
1. Viscosity is the property of liquid by virtue of which it opposes the relative motion between its different layers.
2. Viscosity is the property of liquid only.
Choose the correct answer from the codes given below:
Answer : A
Explanation
Viscosity is the property of both liquid and gas.
Q 20 - An electric motor transforms …
A - Electrical energy into mechanical energy
B - Electrical energy into light energy
Answer : A
Explanation
N/A