A light ray propagates inside a transparent material having index-ofrefraction = 2.17. The ray is incident on the boundary between this material and water (having index-ofrefraction \"water = 1.30). What is the smallest incident angle 0]\" (relative to the normal line to the interface) at which this light ray will be completely reected at the interface (in degrees (0))? Number it = 3.14 QUESTION 10 The simplest nucleus, that of hydrogen, is a single proton. Next comes the nucleus of fH, the isotope of hydrogen with mass number 2, usually called deuterium. Its nucleus consists of a proton and a neutron bound together to form a particle called the deuteron, whose mass is 3.34456E-27 kg. What is the binding energy of the deuteron (in Joule)? (Use 6 sig. gs. for mass in calculations and answer a positive value for the binding energy with the scientic notation up to 3 sig. gs.)