In the phenomenon of diffraction of light, when blue light is used in the experiment instead of red light, then
a)
Fringes will become narrower
b)
Fringes will become broader
c)
No change in fringe width
d)
None of the above
In the phenomenon of diffraction of light, when blue light is used in the experiment instead of red light, then
a)
Fringes will become narrower
b)
Fringes will become broader
c)
No change in fringe width
d)
None of the above
Question ID - 150044 | SaraNextGen Answer
In the phenomenon of diffraction of light, when blue light is used in the experiment instead of red light, then
a)
Fringes will become narrower
b)
Fringes will become broader
c)
No change in fringe width
d)
None of the above
|
In the phenomenon of diffraction of light, when blue light is used in the experiment instead of red light, then |
|||
|
a) |
Fringes will become narrower |
b) |
Fringes will become broader |
|
c) |
No change in fringe width |
d) |
None of the above |
1 Answer - 5876 Votes
3537
Answer Key : (a) -
Answer Link|
(a) Width of central maximum is given by
Where From Eq. (i), it is clear that fringe width
So, when blue light is used in the experiment instead of red light, the fringes will become narrower. |
is focal length of lens, a is width of slit and 
is wavelength of light used.
