Physics
The frequency of violet light is 7.5 x 1014 Hz. Its wavelength in nm is :
- 7500 nm
- 4000 nm
- 400 nm
- 750 nm
Related Questions
Out of red, blue and violet, which colour has the greatest speed in vacuum ?
- red
- blue
- violet
- all have the same speed
A beam consisting of red, blue and yellow colours is incident normally on the face AB of an isosceles right-angled prism ABC as shown in the figure given below. Critical angle of glass-air interface for yellow colour is 45°.
Out of the four emergent rays P, Q, R and S, which one is for the yellow colour :
- P
- Q
- R
- S
The correct order of angle of deviation of indigo, green, yellow and red colours is :
- δI > δG > δY > δR
- δG > δI > δY > δR
- δR > δG > δY > δI
- δR > δY > δG > δI
How does the speed of light in glass change on increasing the wavelength of light?