GUJCET 2023 Physics Solved Paper

Debroglie wavelength is defined as:
λ=‌

h

p

Also, kinetic energy of a particle is:
KE=‌

p2

2m

⇒λ=‌

h

√2‌mKE

Since kinetic energy is same,
λ∝‌

1

√m

Since an electron has very low mass, it will have largest debroglie wavelength.