Physics
In a particular system, the units of length, mass and time are chosen to be 10 cm, 10 g and 0.1 s respectively. The unit of force in this system will be equivalent to

10 N
0.1 N
1 N
100 N

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Physics
Siphon will fail to work if:

The densities of the liquid in the two vessels are equal.
The temperature of the liquids in the two vessels are the same.
Both its limbs are of unequal length.
The level of the liquid in the two vessels are at the same height.

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Physics
Acceleration is

Directly proportional to force
Inversely proportional to force
Directly proportional to mass
Inversely proportional to mass

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