Question

Which of the following statement is incorrect?

• A. Dispersion is maximum for violet colour
• B. Red light travels faster than violet light in a medium
• C. In vacuum red light travel faster than others
• D. Refractive index of violet light is higher in flint glass as compared to crownglass

Answer 1

Answer: (C)

In vacuum all frequencies of electromagnetic waves travels with same speed.
Hence, all colours of white light travel at same speed in vacuum.