Question

. The wavelength of red light obtained from two different sources A and B is XA and XB respectively. What is the relation between two wavelengths? options are
A›B
A<B
pls give the answers
A≥B
A=B
​

Answer 1

A=B as wavelength are always same. ( not sure)

Answer 2

$\boxed{ \bf\lambda_{A} = \lambda_{B}} \: \: \: \: \: \: \: ... \rm(answer)$

But why??

• Every component of white light (in our case : red light) has a specific wavelength depending upon the speed and frequency of the component.

• Now, whatever maybe the source, red light will always have that specific value of wavelength.

• Here , since medium has not been mentioned, we can assume that both the sources are in vacuum (ideal conditions).

• Hence, the wavelength of source A and B emitting red light will be same.

Hope It Helps.