Prerequisite Foundations Quiz — 23PY3103 Fundamentals of Quantum Computing
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Q1. Classical Newtonian mechanics assumes a particle's position and momentum:
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Can never both be known
Can both be known simultaneously and exactly
Are always random
Only momentum can be known
Q2. Which experiment provided decisive evidence for the wave nature of light:
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Millikan's oil-drop experiment
Young's double-slit experiment
Rutherford's gold-foil experiment
Davisson–Germer experiment
Q3. Planck resolved the ultraviolet catastrophe by assuming:
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Light travels faster at short wavelengths
Energy is continuous
Oscillators emit/absorb energy only in discrete quanta E=nhf
Blackbodies do not exist
Q4. In the photoelectric effect, below the threshold frequency f₀, increasing light intensity causes:
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Faster electron emission
Higher-energy electrons
No electrons emitted, regardless of intensity
More electrons, same energy
Q5. Einstein's photoelectric equation KEₘₐₓ = hf − φ shows that maximum electron kinetic energy depends on:
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Light intensity only
Light frequency and the metal's work function
Exposure time only
The angle of incidence only
Q6. In Bohr's model, angular momentum in a stationary orbit is quantised as:
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L = h/n
L = nℏ
L = nh²
L is never quantised
Q7. According to Bohr, a spectral line is emitted when an electron:
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Stays in the same orbit forever
Collides with the nucleus
Jumps from a higher to a lower energy orbit, releasing a photon ΔE=hf
Absorbs an electron from another atom
Q8. De Broglie's relation λ = h/p implies that:
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Only light has wave properties
All matter, not just light, has an associated wavelength
Momentum is always zero for waves
Wavelength is independent of momentum
Q9. Born's Rule interprets |ψ(x)|² as:
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The particle's exact position
The particle's charge density
The probability density of finding the particle at x
The particle's kinetic energy
Q10. Which classical logic gate is reversible (no information is lost):
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AND
OR
NOT
NAND
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