Physics And Measurement Question 357
Question: If $ x=at+bt^{2} $ , where $ x $ is the distance travelled by the body in kilometres while $ t $ is the time in seconds, then the units of b are
[CBSE PMT 1993]
Options:
A) $ km/s $
B) $ km-s $
C) $ km/s^{2} $
D) $ km-s^{2} $
Show Answer
Answer:
Correct Answer: C
Solution:
$ [x]=[bt^{2}]\Rightarrow [b]=[x/t^{2}]=km/s^{2} $
