CGL 2023 Prelims Physics
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Exam: CGL (Prelims)
Year: 2023
Subject: Physics
Total Questions: 19
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Question 1 of 19
1. Question
Fisher’s quantity theory is explained by his famous equation given as _____?
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Question 2 of 19
2. Question
The suitability of post tensioning is good for:
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Question 3 of 19
3. Question
What are the main energy sources for earth’s internal heat engine?
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Question 4 of 19
4. Question
Which of the following has the highest value of resistivity?
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Question 5 of 19
5. Question
For which discovery did William Bradford Shockley, John Bardeen and Walter Houser Brattain jointly receive the Nobel Prize in Physics in 1956?
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Question 6 of 19
6. Question
Which of the following statements is NOT correct about surface tension?
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Question 7 of 19
7. Question
A non-Sl unit called ‘nit’ is the unit of which of the following photometric quantities used to measure a multitude of light intensity?
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Question 8 of 19
8. Question
Identify an application in which solar cells are NOT used.
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Question 9 of 19
9. Question
The famous physicist Victor Franz Hess is known for the discovery of:
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Question 10 of 19
10. Question
When did Henry Cavendish report the measurement of the gravitational constant with the mass and density of the Earth?
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Question 11 of 19
11. Question
Whose law states that total energy per unit mass of flowing fluid, at any point in the subsurface, is the sum of the kinetic, potential, and fluid-pressure energy and is equal to a constant value?
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Question 12 of 19
12. Question
Which pioneer scientist used radio waves to transmit signals over distances of several kilometers in the 1890s?
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Question 13 of 19
13. Question
Select the option that is true regarding the following two statements labelled Assertion (A) and Reason (R).
(A): An object slips less on a rough surface than a smooth surface.
(R): When a surface is rough, frictional force increases.Correct
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Question 14 of 19
14. Question
What is an instrument that sends pulses of electromagnetic energy into the atmosphere to detect rainfall, determine its speed and intensity, and identify precipitation types such as rain, snow or hail?
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Question 15 of 19
15. Question
Whose research was fundamental in establishing the modern discipline known as_ surface tension, which describes the properties of liquid and solid surfaces and interfaces?
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Question 16 of 19
16. Question
Which of the following is the correct match of the column-A with column-B?
Column-A (Physical Property) Column-B (Unit)
i. Electric current a. Tesla.
ii. Voltage b. Farad
iii. Capacitance c. Ampere
iv. Magnetic field d. VoltCorrect
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Question 17 of 19
17. Question
When did Carl Friedrich Gauss and Wilhelm Eduard Weber invent the world’s first electromagnetic telegraph?
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Question 18 of 19
18. Question
Identify the sealed glass vacuum tube containing an electron beam that is focused on a phosphor-coated glass screen when light is emitted.
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Question 19 of 19
19. Question
Who coined the term ‘zeroth law of thermodynamics’ in 1931, which asserts that two bodies in equilibrium with a third are in equilibrium with each other?
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