- Physics Notes for UPSC IAS Prelims (Part I)
- Physics - Home
- Physics - Force and Pressure
- Physics - Friction
- Physics - Some Natural Phenomena
- Physics - Motion
- Physics - Force and Laws of Motion
- Physics - Gravitation
- Physics - Mass and Weight
- Physics - Work and Energy
- Physics - Light
- Physics - Reflection and Refraction
- Images Formed by Spherical Mirrors
- Physics - Refraction of Light
- Physics - Spherical Lenses
- The Human Eye & Colorful World
- Refraction of Light Through a Prism
- Physics - Electricity
- Chemical Effects of Electric Current
- Magnetic Effects of Electric Current
- Physics - Electric Motor
- Physics - Source of Energy
- Physics - Sound Part I
- Physics - Sound Part II
- Speed of Sound in Different Media
- Physics - The Solar System
- Physics - Stars and The Solar System
Physics Part 1 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.
Answer : D
Explanation
N/A
Answer : B
Explanation
Virtual image is formed in location where light does not actually reach.
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.
Answer : B
Explanation
Seismometer is an instrument that measures seismic waves (earthquake waves).
Answer : A
Explanation
Transistor had been invented by Bardeen, Shockley, and Brattain.
Q 6 - The device, which is used to detect the presence of oil on water surface, is known as …
Answer : A
Explanation
N/A
Q 7 - Convex mirror is used for the rear-view in motor vehicles because it forms …
Answer : C
Explanation
N/A
Q 8 - Which among the following colors (lights) has the largest wavelength?
Answer : B
Explanation
Red has about 620–750 nm wavelength, which is maximum among all seven colors.
Q 9 - During the sunrise and sunset, why does sun appears red?
A - Red light has maximum dispersion
B - Red light has minimum dispersion
C - At these times, sun remains at maximum distance
D - All other colors remain invisible in the morning & evening
Answer : B
Explanation
N/A
Answer : D
Explanation
A fluorescent lamp tube is filled with mixture of mercury vapor, argon, xenon, etc.
Q 11 - A battery transforms …
A - Solar energy into electrical energy
B - Electrical energy into light energy
Answer : D
Explanation
N/A
Q 12 - Consider the following statements:
1. The viscosity of liquid is because of the cohesive force between the molecules.
2. The viscosity of gas is because of the diffusion of its molecules from one layer to other layer.
Choose the correct answer from the codes given below:
Answer : C
Explanation
N/A
Answer : A
Explanation
In thermodynamic equilibrium, a perfect black body absorbs all light that strikes on it.
Q 14 - The branch of physics that analyzes the relationship between electrostatic and magnetic fields is known as:
Answer : C
Explanation
Electrodynamics studies and analyzes the relationship between electrostatic and magnetic fields.
Q 15 - Which among the following waves possess the lowest frequency?
Answer : B
Explanation
N/A
Q 16 - Which among the following is used to measure sound under the water?
Answer : C
Explanation
N/A
Q 17 - Who among the following first discovered the production of electricity by chemical reaction?
Answer : A
Explanation
In early 1790s, Allensandra de Volta first discovered the production of electricity by chemical reaction.
Answer : B
Explanation
The measuring unit of thermodynamic temperature is Kelvin.
Q 19 - Who first invented ‘Electric Motor (DC)?’
Answer : B
Explanation
The first commutator DC electric motor capable of turning machinery was invented in 1832 by the British scientist William Sturgeon.
Q 20 - Consider the following statements:
1. A piece of blotting paper soaks ink because the pores of the blotting paper serve as capillary tubes.
2. The oil in the wick of a lamp rises due to capillary action of threads in the wick.
Choose the correct answer from the codes given below:
Answer : C
Explanation
N/A
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