Q.

The units of length, velocity and force are doubled. Which of the following is the correct change in the other units?

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a

Unit of time is doubled

b

Unit of mass is doubled

c

Unit of momentum is doubled

d

Unit of energy is doubled

answer is C.

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Detailed Solution

Since, units of length, velocity and force are, doubled.Hence,[m]=[ force ][ time ][ velocity ][ time ]=[ lengh ][ velocity ]Hence, unit of mass and time remain same. Momentum is doubled.
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The units of length, velocity and force are doubled. Which of the following is the correct change in the other units?