The figure shows a double slit experiment with P and Q as the slits. The path lengths PX and QX are `nlambda` and `(n+2)lambda` respectively, where n is a whole number and `lambda` is the wavelength. Taking the central fringe as zero, what is formed at X?

Fig show a double slit experiment, P and Q are the two coherent source. The path lengths PY and QY are n lambda and (n+4)lambda respectively where n is whole number and lambda is wavelength. Taking the central bright fringe as zero, what is fromed at Y ?

In a Young's double slit experiment, let S_(1) and S_(2) be the two slits, and C be the centre of the screen. If angle S_(1)CS_(2)=theta and lambda is the wavelength, the fringe width will be

In a Young's double slit experiment, let S_(1) and S_(2) be the two slits, and C be the centre of the screen. If angle S_(1)CS_(2)=theta and lambda is the wavelength, the fringe width will be

In Young's double slit experiment, wavelength lambda=5000Å the distance between, the slits is 0.2mm and the screen is at 200cm from the slits. The central maximum is at x=0 The third maximum (Taking the central maximum as zeroth maximum) will be at x equal to

In Young's double slit experiment, wavelength lambda=5000Å the distance between, the slits is 0.2mm and the screen is at 200cm from the slits. The central maximum is at x=0 The third maximum (Taking the central maximum as zeroth maximum) will be at x equal to

In a double slit experiment, the separation between the slits is d and distance of the screen from slits is D. If the wavelength of light used is lambda and I is theintensity of central bright fringe, then intensity at distance from central maximum is