Physics And Measurement Question 206

Question: Suppose refractive index $ \mu $ is given as $ \mu =A+\frac{B}{\lambda _{{}}^{2}} $ where A and B are constants and $ \lambda $ is wavelength, then dimensions of B are same as that of

Options:

A) Wavelength

B) Volume

C) Pressure

D) Area

Show Answer

Answer:

Correct Answer: D

Solution:

[d] As $ \mu =\frac{Velocityoflightinvaccum}{Velocityoflightinmedium} $ , hence $ \mu $ is dimensionless. T

hus, each term on the RHS of given equation should be dimensionless, i.e., $ B/{{\lambda }^{2}} $ is dimensionless, i.e., B should have dimension of $ {{\lambda }^{2}} $ , i.e., $ cm^{2} $ , i.e., area.



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक