Question

Statement 1 : In Young’s double slit experiment if
wavelength of incident monochromatic light is just doubled,
number of bright fringe on the screen will increase.
Statement 2: Maximum number of bright lunge on the screen
is inversely proportional to the wavelength of light used

Answer 1

Answer:

Explanation:

Fringe width of a YDSE interference pattern is given by

β =λD /d

Number of bright fringes possible on a screen of finite width 'S' is  

S / β which is inversely proportional to wavelength

Hence as λ doubles, number of bright fringes obtained halves.