A moving proton and electron have the same de-Broglie wavelength. If K and P denote the K . E . and momentum…

A moving proton and electron have the same de-Broglie wavelength. If K and P denote the K.E. and momentum respectively. Then choose the correct option :
  1. Kp>Ke and Pp=Pe
  2. Kp<Ke and Pp=Pe
  3. Kp<Keand Pp<Pe
  4. Kp=Ke and Pp=Pe

Solution

λdeb =hp=h2mKE
If λ is same the P will be same
KE∝1/m
mp>me⇒Kp<Ke

Asked in: JEE Main 2021 (31 Aug Shift 1)

Practice more Dual Nature of Matter questions on Aicharya