Q18.Particle A of mass mA = m2 moving along the x -axis with velocity v0 collides elastically with another particle B at rest having mass mB = m3 . If both the particles move along the x -axis after the collision, the change Δλ in the wavelength of the particle A , in terms of its de-Broglie wavelength (λ0) before the collision is: (1) Δλ = 32 λ0 (2) Δλ = 52 λ0 (3) Δλ = 2λ0 (4) Δλ = 4λ0
What This Question Tests
The question tests the ability to apply the formulas for elastic collisions to find the final velocity and then use the de-Broglie wavelength formula to determine the change in wavelength.
Concepts Tested
Formulas Used
lambda = h/p
p = mv
v_1f = ((m_1 - m_2)/(m_1 + m_2))v_1i + ((2m_2)/(m_1 + m_2))v_2i
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📋 Question Details
- Chapter
- Dual Nature of Matter
- Topic
- De-Broglie Wavelength
- Year
- 2020
- Shift
- 04 Sep Shift 1
- Q Number
- Q18
- Type
- MCQ
- NCERT Ref
- Class 11 Physics Ch 7: Centre of Mass & Collisions, Class 12 Physics Ch 11: Dual Nature of Matter
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