Light falls on pair of slits 19.0 apart and 80.0 cm from a screen. The first-order bright band is 1.90 cm from the central bright band. What is the wavelength of the light ?

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.