Which of the following statements is incorrec | vedclass

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(C) In a vacuum,all electromagnetic waves,regardless of their frequency or wavelength,travel at the same speed,which is $c \approx 3 	imes 10^8 \ m/s

Vedclass · Accepted Answer

In vacuum,red light travels faster than others.

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(C) In a vacuum,all electromagnetic waves,regardless of their frequency or wavelength,travel at the same speed,which is $c \approx 3 	imes 10^8 \ m/s$. Therefore,the statement that red light travels faster than other colours in a vacuum is incorrect,as all colours of white light travel at the same speed in a vacuum. Option $A$ is correct because violet light has the shortest wavelength and experiences the most deviation. Option $B$ is correct because the refractive index for red light is lower than that for violet light in any material medium,implying $v = c/n$ is higher for red light. Option $D$ is correct because flint glass has a higher dispersive power and generally higher refractive indices than crown glass.

Which of the following statements is incorrect?

Similar Questions

Which of the following curves gives the correct graphical representation between the refractive index $\mu$ of glass and the wavelength $\lambda$ of light?

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The angle of a prism is $10^o$. The refractive indices for red and violet colours are $1.51$ and $1.52$ respectively. Find the dispersive power.

If the refractive indices of red,violet,and yellow lights are $1.42$,$1.62$,and $1.50$ respectively for a medium,its dispersive power will be:

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