Q. Wheels of passenger vehicles are fitted with tyres and tubes which are filled with air. What is the main reason for not filling up the tubes with water ?
(A)
Filling them with water will increase the weight
(B)
If they are filled with water, the force of shocks on passengers, generated by uneven surface of the road, will increase very considerably
(C)
Air is cheaper than water
(D)
It would not be convenient to fill up the tubes with water
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