Diffraction

Question 1

What’s diffraction

Answer 1

It’s a phenomenon wherein light rays deviate from there original paths and bend round the sharp edges of the obstacles that they encounter on their way

Question 2

Why does diffraction occur

Answer 2

It occurs due to bending of light round the edges of obstacles

Question 3

Difraction is divided into ?

Answer 3

1] Fraunhaufers diffraction

2] Fresnels diffraction

Question 4

Bright fringes for diffraction

Answer 4

dsin@ =(2n +1)wavelength Or 0

Question 5

Dark fringes for diffraction

Answer 5

dsin@ = n x wavelength

Question 6

Angular width of central max for diffraction

Answer 6

2 x wavelength/d

Question 7

Linear width of central maximum for diffraction

Answer 7

2f x wavelength/d

Question 8

General condition for applicability for Fraunhaufers diffraction is

Answer 8

d^2/ (wavelength x D)