Electron microscopes use a beam of light to produce a magnified image true or false

The probability that resident buy both morning and eveningpaper is .20, and buying evening paper is .60. find the probabilityof a resident buying the morning paper given that he/she buys theevening paper.

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

Can anybody me with this? ? (picture included.)