Electrons are accelerated by 344 volts and reflected from the crystal. The first reflection maximum occurs when glancing angle is 30°. What will be the value of interplanar spacing of the crystal? [Given h = 6.62 × 10-34 Js, me - 9.1 × 10-31 kg]
1
0.06 × 10-10 m
2
0.66 × 10-10 m
3
1.66 × 10-10 m
4
2.66 × 10-10 m