In Young's double slit experiment, the 10th maximum. When the wavelength λ1 is at a distance of y1 from the central maximum. When the wavelength of the source is changed to λ2,5 th maximum is at a distance of y2 from its central maximum. The ratio (y1y2)is :
(1)2λ1λ2(3)λ12λ2(2)2λ2λ1(4)λ22λ1