Two lasers are shining on a double slit, with slit separation ddd. Laser 1 has a wavelength of d/20d/20, whereas laser 2 has a wavelength of d/15d/15. The lasers produce separate interference patterns on a screen a distance 6.00 mm away from the slits

Which laser has its first maximum closer to the central maximum when shining on a double slit with slit separation d?

A. Laser 1 with a wavelength of d/20.
B. Laser 2 with a wavelength of d/15.
C. Both lasers have their first maximum at the same distance from the central maximum.
D. Insufficient information to determine.

What is the distance Δymax−maxΔymax−max between the first maxima (on the same side of the central maximum) of the two patterns on the screen 6.00 mm away from the slits?

A. Δymax−max=0.2 mm.
B. Δymax−max=0.3 mm.
C. Δymax−max=0.5 mm.
D. Δymax−max=0.8 mm.