Physics
In the spectrum of white light by a prism, the colour at the extreme end opposite to the base of a prism is —
- violet
- yellow
- red
- blue
Related Questions
The wavelength range of white light is:
- 4000 nm to 8000 nm
- 40 nm to 80 nm
- 400 nm to 800 nm
- 4 nm to 8 nm
The correct arrangement of colours in an increasing order of their wavelengths is :
- Violet < Green < Red
- Red < Green < Violet
- Green < Violet < Red
- Green < Red < Violet
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