In Young's experiments the separation of slits is made 2 times. The fringe width will become

Options

A. half
B. 2 times
C. 4 times
D. `(1//4)^(th)` times

Answer

A

Explanation

`d_(2)=2d, beta _(2) ?`
`beta prop(1)/(d)`
`:.(beta_(2))/(beta_(1))=(d_(1))/(d_(2))`
`beta_(2)=(d_(1))/(2d_(2)) xx beta_(1) =(beta_(1))/(2)="half"`