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Question 2
A
frequency of collision of trapped air molecules with walls of the syringe is more 
B
molecules of trapped air expands more 
C
speed of the trapped air molecules decreases 
D
number of molecules of trapped air increases 
Explanation.
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No official Explanation yet!


Correct Option:
B
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Question 4
A
510cm3 
B
340cm3 
C
254cm3 
D
170cm3 
Explanation.
Share Answer V = \(\frac{M}{D}\)

= \(\frac{3.06}{10} \times \frac{1000}{0.9} = 340\)

Correct Option:
B
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Question 5
A
W > U + V 
B
W = U + V 
C
W = U - V 
D
W < U + V 
Explanation.
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No official Explanation yet!


Correct Option:
B
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Question 8
A
4.5 ms-1 
B
15.0 ms-1 
C
15.5 ms-1 
D
51.7 ms-1 
Explanation.
Share Answer A.V. speed = \(\frac{3 \times 15 + 3 \times 20 + 4 \times 20}{3 + 3 + 4}\)

= 15.5 ms-1

Correct Option:
C
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Question 9
A
\(\frac{U sin \theta}{g}\) 
B
\(\frac{U sin \theta}{2g}\) 
C
\(\frac{2U sin \theta}{g}\) 
D
\(\frac{U sin 2\theta}{g}\) 
Explanation.
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No official Explanation yet!


Correct Option:
C
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Question 10
A
20m 
B
40m 
C
80m 
D
160m 
Explanation.
Share Answer H = \(\frac{1}{2} gt^2\)

\(\frac{1}{2} \times 10 \times 4^2 = 80\)

Correct Option:
C
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