A particle of mass 1 mg has the same wavelength as an electron moving with a velocity of 3 × 10⁶ ms⁻¹. The velocity of the particle is (mass of electron = 9.1 × 10⁻³¹ kg)
A
2.7 × 10²¹ ms⁻¹
B
2.7 × 10⁻¹⁸ ms⁻¹
C
9 × 10⁻² ms⁻¹
D
3 × 10⁻³¹ ms⁻¹

Question

A particle of mass 1 mg has the same wavelength as an electron moving with a velocity of 3 × 10⁶ ms⁻¹. The velocity of the particle is (mass of electron = 9.1 × 10⁻³¹ kg)

Accepted Answer

2.7 × 10⁻¹⁸ ms⁻¹

Answer

2.7 × 10²¹ ms⁻¹

Answer

9 × 10⁻² ms⁻¹

Answer

3 × 10⁻³¹ ms⁻¹

AIPMT MAIN 2008 Physics de Broglie Wavelength MCQ Question

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