- 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 - Optical fiber is preferably used in communication because …
B - Optical fiber is efficient
Answer : D
Explanation
Optical fiber is one of the best mediums of transferring information in the present world.
Q 2 - The mirages that we see during the summer season, is because of …
Answer : D
Explanation
Mirage is an optical phenomenon.
Answer : D
Explanation
N/A
Q 4 - What is the frequency range of AM radio wave?
Answer : A
Explanation
AM stands for Amplitude Modulation.
Q 5 - Consider the following statements:
1. Thermodynamic temperature is the absolute measure of temperature.
2. Thermodynamic temperature uses the Kelvin scale for its measurement.
Choose the correct answer from the codes given below:
Answer : C
Explanation
Thermodynamic temperature is one of the principal parameters of thermodynamics.
Q 6 - When you boil water, the surface tension of water …
Answer : A
Explanation
N/A
Q 7 - Which among the following influences the pitch of sounds?
Answer : B
Explanation
Frequency is the number of occurrences of a repeating event per unit time.
Q 8 - A balloon, if filled with hydrogen gas, it rises above because …
B - Weight of balloon is less than the atmospheric pressure
C - The blowing air (wind) takes balloon up
D - The mass of hydrogen is less than the atmospheric air’s mass
Answer : D
Explanation
N/A
Q 9 - If pressure is increased of water then …
A - Boiling point will also increase
B - Boiling point will decrease
Answer : A
Explanation
N/A
Q 10 - In which of the following mediums, sound’s travelling speed is highest?
Answer : C
Explanation
Speed of sound is highest in solid materials e.g. speed of sound in iron is about 5,120 m/s.
Q 11 - Consider the following statements:
1. Distance is the length of the actual path covered by a moving body in a given time interval.
2. Shortest distance covered by a body in a definite direction is called as displacement.
Choose the correct answer from the codes given below:
Answer : C
Explanation
Distance is scalar quantity whereas displacement is a vector quantity.
Answer : A
Explanation
Willis Carrier had first invented the air conditioning system.
Q 13 - Who among the following has discovered y-Rays?
Answer : A
Explanation
N/A
Q 14 - Consider the following statements:
1. The maximum displacement of the vibrating particles on either side from the equilibrium position is known as amplitude.
2. The distance between any two nearest particles of the medium is known as wavelength.
Choose the correct answer from the codes given below:
Answer : C
Explanation
N/A
Answer : A
Explanation
N/A
Q 16 - A dynamo transforms …
A - Mechanical energy into electrical energy
B - Chemical energy into light and heat energy
Answer : A
Explanation
N/A
Q 17 - Consider the following statements:
1. With the emission of Alfa particle, mass number is decreased by 4 and atomic number is decreased by 2.
2. With the emission of Beta particle, mass number does not change, but atomic number is increased by 1.
Choose the correct answer from the codes given below:
Answer : C
Explanation
The change in atomic number and mass number in the radioactivity is explained by Group-displacement law or Soddy-Fajan law.
Q 18 - Consider the following statements:
1. Viscosity of an ideal fluid is zero.
2. Viscosity of fluid is measured by its coefficient of viscosity.
Choose the correct answer from the codes given below:
Answer : C
Explanation
N/A
Q 19 - Who among the following has first used radio waves for communication?
Answer : C
Explanation
In the mid-1890s, Guglielmo Marconi first used radio waves for the communication.
Q 20 - Plants absorb …………………… colors (the most).
Answer : A
Explanation
The chlorophyll plays major role in absorbing the light.