Free Waves MCQs with Answers
1,281 Waves MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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1,281 questions · page 9 of 65
- A. 0.008m/s
- B. 0.050 m/s
- C. 0.125 m/s
- D. 0.314 m/s
Explanation: In simple harmonic motion (SHM), the maximum speed (Vmax) of a particle is related to its amplitude (A) and angular frequency (ω) by the…
Correct answer: 0.314 m/s- A. (k1 +k2)/2
- B. K1+ K2
- C. K1k2/ (k1 + k2)
- D. √𝑘1𝑘2
Explanation: When springs are connected in series, the effective spring constant (keff ) can be found using the formula:1/keff =1/k1 +1/k2where k1 and…
Correct answer: K1k2/ (k1 + k2)- A. 5.6s
- B. 7.9s
- C. 9.6s
- D. 9.8s
Explanation: Correct. According to time dilation in special relativity, the observed period increases for an observer moving at relativistic speedsIn…
Correct answer: 7.9s- A. Phase angle
- B. Angular frequency
- C. Path difference
- D. None
Explanation: In simple harmonic motion, the displacement and direction of motion are determined by the amplitude and the restoring force, but there is…
Correct answer: None- A. Half
- B. Double
- C. No effect
- D. None of these
Explanation: The frequency of a simple pendulum is given by:f = 1 / (2π) * √(g/l)where:f is the frequencyg is the acceleration due to gravityl is the…
Correct answer: Half- A. Extreme position
- B. Peak point
- C. Mean position
- D. Point of maximum energy
Explanation: In Simple Harmonic Motion (SHM), the acceleration of the body is always directed towards the mean position.
Correct answer: Mean position- A. 2
- B. 3
- C. 0.2
- D. 0.02
Explanation: The total energy of the system is conserved. Initially, the block has only kinetic energy, which is converted into potential energy when…
Correct answer: 0.2- A. F=-kx
- B. F=lx
- C. F=k/x
- D. F=k/x^2
Explanation: Hooke's law states that the restoring force (F) exerted by a spring is directly proportional to the displacement (x) from its equilibrium…
Correct answer: F=-kx- A. 9 times
- B. 8 times
- C. 10 times
- D. 20 time
Explanation: The time period of a simple pendulum is given by: T = 2π√(L/g)where:T is the time periodL is the length of the pendulumg is the…
Correct answer: 9 times- A. L/9
- B. L/2
- C. L/3
- D. L/4
Explanation: The time period of a simple pendulum is given by: T = 2π√(L/g)where:T is the time periodL is the length of the pendulumg is the…
Correct answer: L/9- A. 0.5 Hz
- B. 1 Hz
- C. 2 Hz
- D. 4 Hz
Explanation: A second's pendulum takes two seconds to complete one full oscillation.
Correct answer: 0.5 Hz- A. T/sq root 2
- B. T/2
- C. T/3
- D. T/4
Explanation: The time period of a simple pendulum is given by:T = 2π√(L/g)where:T is the time periodL is the length of the pendulumg is the…
Correct answer: T/sq root 2- A. 2 T
- B. 3 T
- C. 4 T
- D. 5 T
Explanation: The time period of a simple pendulum is given by:T = 2π√(L/g)where:T is the time periodL is the length of the pendulumg is the…
Correct answer: 2 T- A. Be static
- B. Oscillate
- C. Attain max acceleration
- D. Continue its motion till the other end and stop
Explanation: When a ball is dropped into a hole dug to the center of the earth, it will experience a force due to gravity that is proportional to its…
Correct answer: Attain max acceleration- A. Mass
- B. Acceleration due to gravity g
- C. Length of the pendulum
- D. Both b and c
Explanation: The time period of a simple pendulum is given by the formula: T = 2π√(L/g)where:T is the time periodL is the length of the pendulumg is…
Correct answer: Acceleration due to gravity g- A. Doubled
- B. Halved
- C. Four times
- D. One fourth
Explanation: The time period of a simple pendulum is given by the formula: T = 2π√(L/g)where:T is the time periodL is the length of the pendulumg is…
Correct answer: Four times- A. 2
- B. 1/2
- C. 1/5
- D. None of the above
Explanation: The time period of a wave is the time taken for one complete oscillation or cycle.
Correct answer: 1/5- A. 10cm
- B. 25cm
- C. 30cm
- D. 40cm
Explanation: The maximum velocity in SHM occurs at the equilibrium position. The equilibrium position is the midpoint of the oscillation, which is the…
Correct answer: 25cm- A. 1 sec
- B. 2 sec
- C. 4 sec
- D. 0.5 sec
Explanation: A seconds pendulum indeed has a time period of 2 seconds. This means it takes 2 seconds to complete one full swing back and forth
Correct answer: 2 sec- A. 1000J
- B. 6250J
- C. 1562.5J
- D. None of these
Explanation: The total mechanical energy of a simple harmonic oscillator is constant and is given by: E = 1/2 kA^2where:E is the total mechanical…
Correct answer: 1562.5J