JEE PHYSICS UNIT 10
QUIZ NO 3
TOTAL QUESTIONS = 20
1. A particle executing simple harmonic motion has maximum speed when
A. Displacement is maximum
B. Displacement is zero
C. Acceleration is maximum
D. Acceleration is zero
2. The time period of a simple pendulum is independent of
A. Length
B. Mass
C. Acceleration due to gravity
D. Amplitude (for small oscillations)
3. In a resonance phenomenon, the amplitude of oscillation is maximum when the frequency of the applied force is
A. Less than the natural frequency
B. Equal to the natural frequency
C. Greater than the natural frequency
D. Independent of the natural frequency
4. The phase difference between displacement and velocity in simple harmonic motion is
A. 0
B. π/2
C. π
D. 2π
5. The frequency of a wave is doubled. Its speed in a given medium
A. Doubles
B. Halves
C. Remains unchanged
D. Becomes four times
6. In a standing wave, the distance between a node and the next antinode is
A. λ
B. λ/2
C. λ/4
D. λ/8
7. The quality factor (Q-factor) of a resonant circuit is a measure of
A. Damping
B. Energy stored versus energy dissipated
C. Bandwidth
D. All of the above
8. The equation of a simple harmonic wave is given by y(x, t) = A sin(kx - ωt). The term k represents
A. Angular frequency
B. Wave number
C. Phase constant
D. Amplitude
9. The speed of sound in a medium depends on
A. Frequency
B. Wavelength
C. Amplitude
D. Properties of the medium
10. The phenomenon where two waves of slightly different frequencies interfere to produce periodic variations in amplitude is called
A. Resonance
B. Beats
C. Doppler effect
D. Diffraction
11. The time period of a mass-spring system is given by
A. 2π√(m/k)
B. 2π√(k/m)
C. 2π√(m*g/k)
D. 2π√(k/m*g)
12. In a damped harmonic oscillator, the amplitude decreases exponentially with time due to
A. Resonance
B. External force
C. Damping force
D. Restoring force
13. The fundamental frequency of a closed organ pipe of length L is
A. v/2L
B. v/L
C. v/4L
D. 2v/L
14. The superposition principle states that when two or more waves overlap, the resultant displacement is
A. The sum of the individual displacements
B. The product of the individual displacements
C. The difference of the individual displacements
D. Zero
15. The energy of a simple harmonic oscillator is
A. Proportional to the square of the amplitude
B. Proportional to the amplitude
C. Independent of the amplitude
D. Proportional to the frequency
16. The phase difference between two points separated by a distance λ/3 in a wave of wavelength λ is
A. π/3
B. 2π/3
C. π/2
D. 2π
17. The speed of a wave on a string under tension T and linear mass density μ is
A. √(T/μ)
B. √(μ/T)
C. T/μ
D. μ/T
18. In a transverse wave, the particles of the medium vibrate
A. Parallel to the direction of wave propagation
B. Perpendicular to the direction of wave propagation
C. In circular paths
D. In elliptical paths
19. The intensity of a wave is proportional to
A. Amplitude
B. Amplitude squared
C. Frequency
D. Frequency squared
20. The restoring force in simple harmonic motion is
A. Directly proportional to displacement
B. Directly proportional to velocity
C. Inversely proportional to displacement
D. Inversely proportional to velocity
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