+91-87964 74404
FlagBACK
Question icon
Grade 12Wave Motion

a diffraction grating used at normal incidence gives a yellow line,λ=5750å in a certain spectral order superimposed on a blue line,λ=4600å of next higher order. if the angle of diffraction is 30°,what is the spacing between the grating line?

Profile image of Abdillahi Khamis
9 Years agoGrade 12
Answers icon

1 Answer

Profile image of Dona Elizabeth
5 Years ago
We have sin30°=nN5750×10^-10..... (1)
Sin30°=nN4600×0^-10.....(2)
Equating we get n=4
Substitute values of n in equation (1)
We get N=217,391 lines per meter.
For finding spacing between lines
d=1/N
d=4.60 meter
 
 

Other Related Questions on wave motion

question mark
A particle on a speing executes shm when the particle is found at x=xmax/2 the speed of the partcle is 
A)vx=vmax 
B)vx=√3vmax/2
C)vx=√2vmax/2
D)vx=vmax/2
wave motion
1 Answer Available

Last Activity: 4 Years ago

question mark
displacement associated with three dimensional wave is given by sai x y is equal to 1 + 1 by 2 x + root 3 by 2 k x minus omega t show that the wave propagates along a direction making an angle 60 degree with the x-axis
wave motion
1 Answer Available

Last Activity: 4 Years ago

question mark
What do you mean by Energy of Simple Hormonic Motion?
 
wave motion
1 Answer Available

Last Activity: 4 Years ago

question mark
What is mean by motion and time define it's all types with there parts and their s.i. units.
wave motion
1 Answer Available

Last Activity: 4 Years ago

question mark
explain the effects of doppler effect in satellite communication
wave motion
1 Answer Available

Last Activity: 4 Years ago