Physics And Measurement Question 161

Question: In a system of units if force (F), acceleration and time (T) are taken as fundamental units then the dimensional formula of energy is?

[BHU 2005]

Options:

A) FA2T

B) FAT2

C) F2AT

D) FAT

Show Answer

Answer:

Correct Answer: B

Solution:

E=KFaAbTc

[ML2T2]=[MLT2]a[LT2]b[T]c

[ML2T2]=[MaLa+bT2a2b+c]

a=1 , a+b=2

therefore b=1 and 2a2b+c=2   c=2

E=KFAT2 .



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