List of top Physics Questions on Wave optics asked in BHU UET

White light may be considered to be a mixture of wave with $\lambda$ ranging between $3000 \,?$ and $7800\,?$. An oil film of thickness $10,000\,?$ is examined normally by the reflected light. If $\mu=1.4$, then the film appears bright for

In a hall, a person receives direct sound waves from a source $120 \,m$ away. He also receives waves from the same source which reach him after being reflected from the $25\, m$ high ceiling at a point half-way between them. The two waves interfere constructively for wavelengths (in metre) of