Quiz on Physics Set 72

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Quiz on Physics Set 72 :

Question 1 : 

The photo-oxidation process is initiated by
A. Catalyst
B. Heat
C. Light
D. Oxygen

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Correct Ans: Option C

Question 2 : 

Which of the following is a semiconductor?
A. Glass
B. Silicon
C. Wood
D. Phosphorus

View Answer
Correct Ans: Option B

Question 3 : 

Several colours on the screen of a colour television are produced by mixing lights of colours:
A. Yellow, green and blue
B. Red, yellow and green
C. Red, green and blue
D. Red, yellow and blue

View Answer
Correct Ans: Option C

Question 4 : 

Consider the following statements.
1.Loudness of sound is measured in decibels (dB).
2.Quality of sound is related to the wavefront.
3.Loudness of sound is related to amount of sound passing each second through a unit area in a particular medium.
4.Light year is the unit of time. Which of the statements given above are true?
A. 1, 2 and 4
B. 1, 3 and 4
C. 1, 2 and 3
D. 1 and 3

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Correct Ans: Option C

Question 5 : 

Which of the following statements is incorrect regarding the velocity of sound ?
A. Velocity of sound in air increases with temperature.
B. Sound travels faster in steel than in air.
C. Change of pressure has no effect on the velocity of sound in air.
D. A loud sound travels faster than a feeble sound.

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Correct Ans: Option D

Question 6 : 

Van der Waals' equation explains the behaviour of
A. Mixture of gases
B. Water gas
C. Real gas
D. Ideal gas

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Correct Ans: Option C

Question 7 : 

The process of electroplating involves
A. decomposition
B. dialysis
C. electrolysis
D. osmosis

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Correct Ans: Option C

Question 8 : 

An instrument has two strings. Both have the same length and are uniform. One of the strings is under twice as much tension as the other and also twice the mass of the other. Then which of the following statements is true?
A. The frequencies and wavelengths on the two strings are equal but the velocity of the wave is less on the more massive string than on the other.
B. The more massive string has a resonant frequency √2 times the other frequency.
C. Both strings vibrate with the same frequency and have the same wave-length and the same wavevelocity.
D. Both strings vibrate at the same frequency but the more massive string has a longer wavelength.

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Correct Ans: Option C

Question 9 : 

Visible light has a higher frequency than
A. X rays
B. Ultra violet
C. Radio waves
D. All the above

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Correct Ans: Option C

Question 10 : 

Which of the following has got more heat capacity?
A. Gold piece
B. Benzene
C. Iron piece
D. Water

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Correct Ans: Option D

Quiz Summary

Here the correct answers of every question in this quiz.

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


Total Questions: 10
Your score:
Subject: Physics
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