Quiz on Physics Set 127

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Quiz on Physics Set 127 :

Question 1 : 

White light is made up of seven colours. What is the method of separating the colours?
A. By passing it through a prism
B. By filtration
C. Can’t be separated
D. Both (a) and (b)

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Correct Ans: Option A

Question 2 : 

During the change of state the temperature of the substance
A. increases
B. decreases
C. remains the same
D. may increase or decrease

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Correct Ans: Option C

Question 3 : 

To hear a clear echo, the minimum distance should be
A. 165 feet
B. 165 meter
C. 16.5 feet
D. 16.5 meter

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Correct Ans: Option D

Question 4 : 

A planet is moving around the sun in an elliptical orbit. Its speed is
A. maximum when it is nearest to the sun
B. maximum when it is farthest from the sun
C. same at all points of the orbit
D. none of the above

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Correct Ans: Option A

Question 5 : 

The Carnot’s engine takes heat
A. at constant energy
B. at constant volume
C. at constant temperature
D. at constant pressure

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Correct Ans: Option C

Question 6 : 

Which one of the following is the unit of activity of a radioactive source?
A. Tesla
B. Lux
C. Siemens
D. Becquerel

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Correct Ans: Option D

Question 7 : 

Kerosene oil rises up in a wick of a lantern because of
A. Diffusion of the oil through the wick
B. Surface tension
C. Buoyant force of air
D. The gravitational pull of the wick

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Correct Ans: Option B

Question 8 : 

A resonant system has a fundamental frequency of 100 Hz. If the next higher frequency that gives a resonance are 300 Hz and 500 Hz, the system could be
A. A pipe open at both ends
B. A string vibrating between two fixed points
C. A pipe closed at both ends
D. A pipe open at one end and closed at the other

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Correct Ans: Option D

Question 9 : 

After long periods of use, a grey spot develops on the inside of a bulb. This is as
A. the tungsten filament evaporates & collects there
B. glass undergoes a change due to the heat
C. the heat of the bulb scorches the glass at the top
D. dust inside the bulb condenses on the top

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Correct Ans: Option D

Question 10 : 

Flywheel is an important part of a steam engine as it:
A. helps the engine in keeping the speed uniform
B. gives strength to the engine
C. accelerates the speed of the engine
D. decreases the moment of inertia

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Correct Ans: Option A

Quiz Summary

Here the correct answers of every question in this quiz.

Q.1 [A],     Q.2 [C],     Q.3 [D],     Q.4 [A],     Q.5 [C],     Q.6 [D],     Q.7 [B],     Q.8 [D],     Q.9 [D],     Q.10 [A],    


Total Questions: 10
Your score:
Subject: Physics
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