Login
Login
Login
Register

Tutor HuntTest QuestionsPhysics QuestionsYear 10 Physics Questions

 

Sound Waves (physics Only) (ht Only) (GCSE Physics)

The following is a GCSE Physics test covering 'Sound Waves (physics Only) (ht Only)' from the broader topic Waves. The test is geared towards the AQA exam board style syllabus.
Start Test
Incorrect: 0
Correct: 0
Question 1
...
Congratulations - you have completed the test!
Your final score was

Below a typical questions that will be covered in this test. You final score will be logged on your account

A loudness level L in decibels (dB) is defined by L = 10 log10(I/I0) where I0 is a reference intensity. If a sound’s intensity is 100 times the reference, what is its level in dB?
A room has a single-frequency standing sound wave set up. If two adjacent nodes are 0.25 m apart, what is the wavelength of the standing wave? (Node–node distance = ?/2)
A sound wave in air has frequency 500 Hz and intensity I0. If the amplitude of pressure oscillation is doubled, what is the new intensity in terms of I0? (Intensity ? amplitude^2.)
A tube open at both ends supports a standing sound wave whose fundamental frequency is 256 Hz. If the speed of sound is 340 m/s, what is the length of the tube? (For an open–open tube the fundamental has ? = 2L.)
A tube closed at one end has its first resonance (fundamental) at 170 Hz. If the speed of sound is 340 m/s, what is the length of the tube? (For closed–open tube fundamental ? = 4L.)
A moving-coil loudspeaker uses alternating current in a coil placed in a permanent magnetic field. Which property of the output sound is changed by increasing the amplitude of the alternating current (keeping frequency constant)?
A moving-coil microphone diagram shows a coil attached to a diaphragm inside a magnetic field. What electrical quantity is produced directly when the diaphragm vibrates?
A moving-coil microphone (like the one in the exam diagrams) converts sound pressure variations into an electrical signal by moving a coil in a magnetic field. Which physical law describes the force on the coil that causes it to move?
A student measures a sound level of 60 dB and another of 90 dB. How many times larger is the intensity (power per unit area) of the 90 dB sound compared with the 60 dB sound? (Use 10 log10 rule.)
An ultrasound pulse (1 MHz) is emitted into tissue where speed is 1540 m/s. What is the pulse wavelength in tissue?
A sound wave has pressure amplitude p0 and intensity I ? p0^2. If the intensity at 1 m is 0.02 W/m^2, what intensity at 2 m from a point source (neglecting absorption)?