PHY 101 | Study Mode

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Question 41
A
The mean speed of the molecules doubles
B
The number of molecules doubles
C
The mean square speed of the molecules doubles
D
The number of molecules per unit volume doubles.
E
The rms speed of the molecules doubles.
Explanation

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Correct option: C
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Question 42
A
Dry gin
B
Distilled Water
C
Engine oil
D
Kerosine
E
Petrol
Explanation

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Correct option: C
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Question 43
A
Newton
B
Watt
C
Newton-meter
D
Newton second.
E
Joule.
Explanation

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Correct option: C
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Question 44
A
at constant pressure the molecules have to travel greater distances in between collisions with one another
B
at constant pressure the molecules have to travel less distances in between collisions with one another
C
at constant pressure the molecules have to travel same distances in between collisions with one another
D
at constant temperature the molecules have to travel less distances in between collisions with one another
E
none of the above
Explanation

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Correct option: B
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Question 45
A
P/3
B
P
C
3P
D
9P
E
27P
Explanation

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Correct option: C
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Question 46
A
50.0C
B
75.0C
C
40.0C
D
70.0C
E
30.0C
Explanation

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Correct option: B
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Question 47
A
3.0051
B
3.0017
C
3.51
D
3.051
E
3.017
Explanation

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Correct option: A
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Question 48
A
3Vt
B
2Vt
C
Vt
D
⅓Vt
E
Vt
Explanation

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Correct option: A
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Question 49
A
variation of pressure with temperature
B
Change in colour with temperature
C
Thermoelectric effect
D
Change in electric resistance of a conductor
E
Expansivity of a liquid
Explanation

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Correct option: B
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Question 50
A
The balance wheel of a watch
B
Fire alarms
C
The bimetallic thermometer
D
The fitting of wheels in rims
E
The therostat
Explanation

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Correct option: A

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