IB Physics Topic 4 Paper 1 Practice

A

7. An object is undergoing simple harmonic motion with light damping. The natural frequency of oscillation of the object is f0. A periodic force of frequency f is applied to the object. Which of the following graphs best shows how the amplitude a of oscillation of the object varies with f?

C

A force that varies sinusoidally is applied to a system that is lightly damped. Which of the following must be true of the force for resonance to occur? A. It must always be in anti-phase with the oscillations of the system. B. Its direction must always be in the direction of motion of the oscillations of the system. C. Its frequency must be equal to the frequency of oscillation of the system. D.Its amplitude must be equal to the amplitude of oscillation of the system.

D

A particle oscillates with simple harmonic motion with period T. At time t = 0, the particle has its maximum displacement. Which graph shows the variation with time t of the kinetic energy Ek of the particle?

D

A string vibrates with fundamental frequency f. The wavelength of the sound produced in air is λ. Which of the following correctly gives the frequency of vibration of the fourth harmonic of the string and the wavelength of the sound in air?

C

A transverse wave travels from left to right. The diagram below shows how, at a particular instant of time, the displacement of particles in the medium varies with position. Which arrow represents the direction of the velocity of the particle marked P?

A

An object at the end of a spring oscillates vertically with simple harmonic motion. The graph shows the variation with time t of the displacement x. The amplitude is x0 and the period of oscillation is T. Which of the following is the correct expression for the displacement x?

C

An object at the end of a spring oscillates vertically with simple harmonic motion. The graph shows the variation with time t of the displacement x. The amplitude is x0 and the period of oscillation is T. Which of the following is the correct expression for the maximum acceleration of the object?

C

Light travels from air into glass as shown below. The refractive index of the glass is A. sin30/sin80 B. sin80/sin30 C. sin60/sin10 D. sin10/sin60

D

Light travels from air into glass as shown below. What is the refractive index of glass? A. sinP/sinS B. sinQ/sinR C. sinP/sinR D. sinQ/sinS

C

The diagram below is a snapshot of wave fronts of circular waves emitted by a point source S at the surface of water. The source vibrates at a frequency f = 10.0 Hz. The speed of the wave front is A. 0.15 cm s-1. B. 1.5 cm s-1. C. 15 cm s-1. D. 30 cm s-1.

C

The graph shows how the displacement varies with time for an object undergoing simple harmonic motion. Which graph shows how the object's acceleration a varies with time t?

C

The graph shows how the velocity v of an object undergoing simple harmonic motion varies with time t for one complete period of oscillation. Which of the following sketch graphs best shows how the total energy E of the object varies

C

The graph shows measurements of the height h of sea level at different times t in the Bay of Fundy. Which of the following gives the approximate amplitude and period of the tides? A. 6.5 m, 6 hours B. 13 m, 12 hours C. 6.5 m, 12 hours D. 13 m, 6 hours

B

The graphs show how the acceleration a of four different particles varies with their displacement x. Which of the particles is executing simple harmonic motion?

D

The shock absorbers of a car, in good working condition, ensure that the vertical oscillations of the car are A. undamped. B. lightly damped. C. moderately damped. D.critically damped.

A

Two coherent point sources S1 and S2 emit spherical waves. Which of the following best describes the intensity of the waves at P and Q? A. maximum, minimum B. minimum, maximum C. maximum, maximum D. minimum, minimum

A

Two waves meet at a point in space. Which of the following properties always add together? A. Displacement B. Amplitude C. Speed D. Frequency

C

Two waves meet at a point. The waves have a path difference of wavelegnth/4. The phase difference between the waves is A. pi/8 B. pi/4 C. pi/2 D. pi

A

Which of the following electromagnetic waves has a frequency greater than that of visible light? A. Ultraviolet B. Radio C. Microwaves D.Infrared

C

Which of the following is a value of wavelength that is found in the visible region of the electromagnetic spectrum? A. 4 × 10-5 m B. 4 × 10-7 m C. 4 × 10-9 m D.4 × 10-11 m