Widths of two slits in Young's experiment are in the ratio `4 : 1`. What is the ratio of the amplitudes of light waves from them ?

Options

A. `4:1`
B. `1:4`
C. `2:1`
D. `1:2`

Answer

C

Explanation

Ratio of fringe widths, `(beta_(1))/(beta_(2))=(4)/(1)`
now, `(a_(1)^(2))/(a_(2)^(2))=(beta_(1))/(beta_(2))=(4)/(1)`
`therefore(a_(1))/(a_(2))=(2)/(1)`