Monochromatic light falls on a diffraction grating, producing a diffraction pattern. Which row gives the possible effects of changing to a grating with twice as many lines per millimetre?
- Anumber of orders of diffraction visible decreases, angle between first and second orders decreases
- Bnumber of orders of diffraction visible decreases, angle between first and second orders increases
- Cnumber of orders of diffraction visible increases, angle between first and second orders decreases
- Dnumber of orders of diffraction visible increases, angle between first and second orders increases