- 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 : A
Explanation
N/A
Q 2 - Which among the following rays is used in night vision device?
Answer : A
Explanation
Infrared radiation’s wavelength varies between 800 nm and 1 mm.
Q 3 - The X-rays are produced when …
A - The electrons collide with the atoms and nuclei of the targeted metal
B - The protons collide with the atoms and nuclei of the targeted metal
C - The neutrons collide with the atoms and nuclei of the targeted metal
D - The positrons collide with the atoms and nuclei of the targeted metal
Answer : A
Explanation
Discovered in 1895 by Wilhelm Conrad Roentgen, X-ray is a very energetic form of electromagnetic radiation; it is used to take image of a human body.
Q 4 - If the temperature rises, then the speed of light will …
D - May increase or may decrease depend on the source of light
Answer : C
Explanation
N/A
Q 5 - The process by which heat energy is transmitted through the collisions between neighboring molecules is known as …
Answer : A
Explanation
In solid, heat is transmitted through conduction process.
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:
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 - If energy transmits in the form of waves or particles is known as …
Answer : C
Explanation
The best example of radiation is electromagnetic radiation.
Q 8 - Which of the following waves is used in SONAR?
Answer : D
Explanation
N/A
Q 9 - Pascal’s law explains …
Answer : A
Explanation
The principle/law explains the transmission of fluid-pressure.
Q 10 - Which among the following colors of heat radiation represents the lowest temperature?
Answer : A
Explanation
N/A
Q 11 - What is semiconductor?
A - It can carry electricity, but will provide very low voltage
B - It cannot carry electricity
Answer : C
Explanation
Semiconductor is a substance that can conduct electricity in certain condition, but not always.
Q 12 - Which among the following is used to determine the heights?
Answer : C
Explanation
N/A
Q 13 - Consider the following statements:
1. The sound waves that reflected back by the buildings or mountains are known as echo.
2. To hear the echo, the minimum distance required between the observer and reflector is 27 meters.
Choose the correct answer from the codes given below:
Answer : A
Explanation
To hear the echo, the minimum distance required between the observer and reflector is 17 meter.
Q 14 - One inch is equal to …
Answer : A
Explanation
N/A
Q 15 - Which among the following is used to compare the intensity of colors?
Answer : D
Explanation
N/A
Answer : D
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.
Q 18 - Which among the following has the maximum specific heat capacity?
Answer : A
Explanation
Water has about 4200 J/kgK specific heat capacity.
Answer : C
Explanation
Cornelis Drebbel first mentioned about the submarine; however, the first military submarine was invented by the American scientist David Bushnell.
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