(a) It explains definite paths of electrons (b) It explains definite paths of photons (c) It nules out existence of definite paths of electrons (d) It rules out existence of definite paths of photons. 18.The energy (E) of a quantum is related with its frequency ( \( b \) ) as (a) \( E=h v(b) E=h / v(c) E=v / h( \) d) \( E=2 v / h \) 19.The smallest quantity of energy that can be emitted or absorbed in the form electromagnetic radiation is known as (a) Proton (b) Neutron (c) Momentum (d) Quantum 20.The energy of one mole of photons of radiation having frequency \( 5 \times 10^{14} H _{2} \) is \( \left( h =6.626 \times 10^{-34} JS \right) \) (a) \( 299.51 kj mol ^{-1} \) (b) \( 399.51 kj mol ^{-1} \) (c) \( 499.51 kj mol ^{-1} \) (d) \( 199.51 kj mol ^{-1} \) 21. Which region of the electromagnetic radiation will provide photons of the least energy? (a) Radio waves (b) Ultraviolet (c) X-rays (d) Infrared 22.The phenomena of the black body radiation was given by: (a) Niels Bohr (b) J.J Thompson (c) Max Planck (d) H.Hertz 23. Which part of the electromagnetic spectrum can be seen by our eyes: (a) Infrared (b) Micro wave (c) Visible (d) X-rays