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Waves

From Paper 1
3(a)4 marks
Explain how a stationary wave forms on a string fixed at both ends and why nodes form at fixed positions.
From Paper 1
3(b)3 marks
A guitar string of length 0.65 m has tension 60 N and mass per unit length 4.0 × 10⁻⁴ kg m⁻¹. Calculate the frequency of the first harmonic.
From Paper 1
3(c)3 marks
An optical fibre has a core of refractive index 1.50 and cladding of refractive index 1.45. Calculate the critical angle at the core–cladding boundary and give one reason for using cladding.
From Paper 1
151 mark
Two points on a wave are a quarter of a wavelength apart. What is their phase difference?
From Paper 1
161 mark
A string 0.80 m long vibrates at its third harmonic. What is the wavelength?
From Paper 1
171 mark
Light of wavelength 600 nm passes through slits 0.40 mm apart onto a screen 2.0 m away. What is the fringe spacing?
From Paper 1
181 mark
A grating has 300 lines per mm. What is the highest order visible for 600 nm light?
From Paper 1
191 mark
What is the critical angle for light going from glass (n = 1.5) to air?
From Paper 3 (Section A + Option A: Astrophysics)
3(a)3 marks
Describe how to investigate how the first harmonic frequency of a stretched string depends on its tension.
From Paper 3 (Section A + Option A: Astrophysics)
3(b)4 marks
Results:
T / N2.04.06.08.0
f / Hz507187100
Show that the data are consistent with f ∝ √T, using a logarithmic method.
From Paper 3 (Section A + Option A: Astrophysics)
3(c)2 marks
The string length is 1.00 m. Calculate the mass per unit length.
Score 0 / 24 · 0 of 11 marked

This paper is written by Plasmo in the style of the AQA A-Level Physics exam. It is not a past paper and is not produced or endorsed by the exam board.

Waves Exam Questions: AQA A-Level Physics | Plasmo