Home › JEE Advanced › Physics › JEE Main 2023 Mixed › Two particles of mass m and 4m have same kinetic…
Two particles of mass m and 4m have same kinetic energy. Ratio of their de Broglie wavelengths:
A1:1
B4:1
C1:2
D2:1
Answer & Solution
Correct answer: D. 2:1
λ = h/p = h/sqrt(2mKE). Same KE: λ ∝ 1/sqrt(m). λ₁/λ₂ = sqrt(m₂/m₁) = sqrt(4) = 2. Hence 2:1.
Related questions
In the photoelectric effect, the kinetic energy of ejected electrons is:The electronic configuration of Cr (Z=24) is an exception, written as:By the AUFBAU principle, the 3d subshell starts filling:Hund's rule states that electrons in degenerate orbitals:Heisenberg's uncertainty principle is most accurately stated as:The de Broglie wavelength of a particle with momentum p is:The BALMER series of hydrogen corresponds to electron transitions ending at:The energy of the nth orbit in a hydrogen atom (Bohr's model) is: