Optics Question 1007
Question: If the ratio of intensities of two waves is 1 : 25, then the ratio of their amplitudes will be
[CPMT 1984]
Options:
A) 1 : 25
B) 5 : 1
C) 26 : 24
D) 1 : 5
Show Answer
Answer:
Correct Answer: D
Solution:
$ \frac{I _{1}}{I _{2}}=\frac{1}{25};\ \ \therefore \frac{a _{1}^{2}}{a _{2}^{2}}=\frac{1}{25}\Rightarrow \frac{a _{1}}{a _{2}}=\frac{1}{5} $
