radius of 1st ring is 0.05mm ,light wavelength is 5895A° .where should the screen b placed to get a bright spot?
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metallic mercury and not its oxidedoes the roasting of cinnabar (Hgs), producemany electrons are required to discharge 3 moles ofny electrons are required to discharge 3 moles of Ca++ ionelectrons are required to discharge 3 moles of Ca++ ionYou have three hats in one bag: a cowboy hat, a top hat and a baseball hat. You also have four shirts in another bag: white black, green and pink. If you select one hat and one shirt at random, what is the probability you choose the cowboy hat and the black shirt?The electronic configuration of an element A is 1s2,2s2,2p6,3s2 while of the element B is 1s2,2s2,2p5.The formula of sibstance containing A and B wil be???2^m+3×3^2m-n×5^m+n+3×6^n+1/(6^m+1×10^n+3×15^mreturn walk. Give your answer in centimetres. Pls explain step by step fast