Physics | Study Mode

Question 1
A
kgms-2
B
kg m-1s-2
C
kg m-2s-2
D
kg m-1s2
Explanation.

No official Explanation yet!

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.

No official Explanation yet!

Question 3
A
manometer
B
hydrometer
C
hypsometer
D
hygrometer
Explanation.

No official Explanation yet!

Question 4
A
510cm3
B
340cm3
C
254cm3
D
170cm3
Explanation.
V = $$\frac{M}{D}$$

= $$\frac{3.06}{10} \times \frac{1000}{0.9} = 340$$

Question 5
A
W > U + V
B
W = U + V
C
W = U - V
D
W < U + V
Explanation.

No official Explanation yet!

Question 6
A
osmosis
B
brownian motion
C
capillarity
D
diffusion
Explanation.

No official Explanation yet!

Question 7
A
water
B
diesel
C
petrol
D
kerosine
Explanation.

No official Explanation yet!

Question 8
A
4.5 ms-1
B
15.0 ms-1
C
15.5 ms-1
D
51.7 ms-1
Explanation.
A.V. speed = $$\frac{3 \times 15 + 3 \times 20 + 4 \times 20}{3 + 3 + 4}$$

= 15.5 ms-1

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.

No official Explanation yet!

Question 10
A
20m
B
40m
C
80m
D
160m
Explanation.
H = $$\frac{1}{2} gt^2$$

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

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