Wave Optics

What is the primary cause of interference in wave optics?

In Young’s double-slit experiment, the fringe width \( \beta \) is given by which formula?

Which of the following conditions is necessary for two waves to produce sustained interference fringes?

In a single-slit diffraction experiment, the angular width of the central maximum is given by:

If the wavelength of light used in Young’s double-slit experiment is doubled, what happens to the fringe width?

In Newton’s rings experiment, the radius of the \( m^{th} \) dark ring is proportional to:

Which phenomenon confirms the wave nature of light by producing a pattern of bright and dark fringes?

In a thin film of thickness \( t \) and refractive index \( n \), the condition for constructive interference in reflected light is:

The resolving power \( R \) of a microscope objective is given by:

In a diffraction grating with 6000 lines/cm, what is the angular position of the first order maximum for light of wavelength 600 nm? (Use \( d = \frac{1}{N} \))