Quiz for Superposition of Waves

Q1: What happens when two waves of equal amplitude and frequency interfere constructively?

A. Amplitude doubles B. Amplitude becomes zero C. Amplitude remains same D. Waves cancel out

Q2: Which of the following is a necessary condition for constructive interference?

A. Same amplitude B. Phase difference of π C. Path difference of λ/2 D. Path difference of nλ

Q3: What is the result of destructive interference of two waves with same amplitude?

A. Amplified wave B. No resultant wave C. Half amplitude wave D. Standing wave

Q4: Principle of superposition applies to which types of waves?

A. Only sound waves B. Only EM waves C. All types of waves D. Only longitudinal waves

Q5: Which condition results in maximum intensity during interference?

A. Phase diff of 90° B. Waves out of phase C. Phase diff of 180° D. Waves in phase

Q6: When does destructive interference occur?

A. Waves in phase B. Equal amplitude and same frequency C. Phase difference = π D. Equal wavelength

Q7: Resultant amplitude is zero when two waves have:

A. Same phase B. Same frequency and phase C. Same amplitude, out of phase by π D. Different wavelength

Q8: In superposition, the resultant wave at a point is determined by:

A. Average of displacements B. Sum of displacements C. Product of displacements D. Difference of displacements

Q9: Which expression represents constructive interference?

A. Δφ = π B. Δx = (2n+1)λ/2 C. Δx = nλ D. Δφ = π/2

Q10: For destructive interference, path difference must be:

A. nλ B. (2n+1)λ/2 C. λ/4 D. n/2λ

Q11: What forms when two identical waves move in opposite directions?

A. Interference pattern B. Travelling wave C. Standing wave D. Damped wave

Q12: Superposition principle fails in which of the following?

A. Nonlinear media B. Vacuum C. Elastic medium D. String

Q13: Which phenomenon uses superposition?

A. Diffraction B. Reflection C. Refraction D. Polarization

Q14: Nodes in standing wave are points of:

A. Minimum displacement B. Maximum displacement C. No pressure variation D. Constructive interference

Q15: Antinodes are formed due to:

A. Complete cancellation B. Maximum reinforcement C. Wave reflection D. Phase inversion

Q16: What is observed in Young’s double-slit experiment?

A. Standing waves B. Single wavefront C. Interference pattern D. Scattering

Q17: In interference pattern, dark fringe indicates:

A. Constructive interference B. Zero amplitude C. Maximum energy D. Reflected wave

Q18: Constructive interference increases:

A. Amplitude B. Wavelength C. Frequency D. Speed

Q19: Which condition does not favor superposition?

A. Linear medium B. Coherent sources C. Same frequency D. Different media

Q20: For sustained interference pattern, the sources must be:

A. Equal distance from screen B. Monochromatic and coherent C. Out of phase D. Moving