Question

Q172) If kinetic energy of a proton is increased nine times, the wavelength of the de-Broglie wave associated with it would become

Q172) If kinetic energy of a proton is increased nine times, the wavelength of the de-Broglie wave associated with it would become

SOLUTION

de-Brogli wavelength interms of kinetic energ E is given by

From equation when Kinetic energy E. of the electron increased 9 times. The de-Broglie wavelength decreased by
1/3 times.

Answer:(c)