MCQ
On colliding in a closed container the gas molecules
- ✓Transfer momentum to the walls
- BMomentum becomes zero
- CMove in opposite directions
- DPerform Brownian motion
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Statement$-I :$ An elevator can go up or down with uniform speed when its weight is balanced with the tension of its cable.
Statement$-II :$ Force exerted by the floor of an elevator on the foot of a person standing on it is more than his/her weight when the elevator goes down with increasing speed.
In the light of the above statements, choose the correct answer from the options given below :