Select the correct statements about the de Broglie wavelength lambda of material particles.

If the momentum is doubled, lambda is halved.

Two particles with the same momentum have the same lambda whatever their masses.

At equal speed, a heavier particle has a shorter lambda.

If the momentum is doubled, lambda is halved.

Two particles with the same momentum have the same lambda whatever their masses.

If the kinetic energy of a particle is doubled, lambda is halved.

At equal speed, a heavier particle has a shorter lambda.

JEE Main levelOne or more correct optionsDifficulty 2 of 3as131

Select the correct statements about the de Broglie wavelength $λ$ of material particles.

λ = h / p

: it is inversely proportional to

p

(A true) and depends only on

p

(B true). At fixed speed

λ \propto 1/ m

(D true). With

K

doubled,

p \propto K

grows by

2

, so

λ

falls by

2

, not 2 (C false).