Question
Question: If force F = Ke<sup>-br</sup>/r<sup>2</sup> varies with distance r. Then write the dimensions of K a...
If force F = Ke-br/r2 varies with distance r. Then write the dimensions of K and b.
A
ML3T-2
B
M-2LT-3
C
ML-2T3
D
M-2L-3T2
Answer
ML3T-2
Explanation
Solution
Exponential must be dimensionless. Therefore b shall have dimension L-1 and K = Fr2 = (MLT-2) (L2) = ML3T-2