Quiz on Physics Set 47

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Quiz on Physics Set 47 :

Question 1 : 

Thermocouple consists of
A. Two dissimilar metals
B. Two similar metals
C. Metal and a semiconductor
D. Metal and an insulator

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Correct Ans: Option A

Question 2 : 

Water has maximum density at
A. 100°C
B. 0°C
C. 4°C
D. 273°C

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Correct Ans: Option C

Question 3 : 

When water freezes its density
A. Decreases
B. Becomes Zero
C. Remains constant
D. Increases

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Correct Ans: Option A

Question 4 : 

Which of the following are methods of heat transfer?
A. Convection
B. Evaporation
C. Revolution
D. Thermal Expansion

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Correct Ans: Option A

Question 5 : 

Heat energy is transferred by conduction whenever molecules
A. Collide each other
B. Means of photons
C. Particles replaces there places
D. All of the above

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Correct Ans: Option A

Question 6 : 

What are ultrasonic waves?
A. Sound waves with a frequency higher than audiofrequency range
B. Sound waves produced in vacuum
C. Sound waves with a frequency shorter than audio frequency range
D. None of these

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Correct Ans: Option A

Question 7 : 

The sun remains visible for some time after it actually sets below the horizon. This happens due to
1.atmospheric refraction
2.scattering of light
3.dispersion Which of the above statements is/are correct?
A. 1 and 2
B. 1, 2 and 3
C. 1 and 3
D. 1 only

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Correct Ans: Option D

Question 8 : 

The phenomenon of total internal reflection may occur when light is passing from
A. Air to glass
B. Air to oil
C. Air to water
D. Glass to air

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Correct Ans: Option D

Question 9 : 

Food is cooked faster in a pressure cooker because
A. steam is hotter than the boiling water
B. due to high pressure, the boiling point of water is raised
C. in the cooker water starts boiling at a lower temperature
D. heat cannot escape from the cooker

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Correct Ans: Option B

Question 10 : 

Which of the following are the areas of application of Doppler’s effect?
A. At airports to guide aircraft
B. in the military to detect enemy aircraft
C. Sonography
D. All of the above

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Correct Ans: Option D

Quiz Summary

Here the correct answers of every question in this quiz.

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


Total Questions: 10
Your score:
Subject: Physics
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