Scottish Highers · Higher Physics

Particles and Waves

9 practice questions, each with the answer and an explanation.

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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 9 questions

What is the energy of a photon of frequency $6.0 \times 1 0^{14}$ Hz? ( $h = 6.63 \times 1 0^{- 34}$ J s)
Light of wavelength 500 nm travels in a vacuum. What is its frequency? ( $c = 3.00 \times 1 0^{8}$ m/s)
The threshold frequency of a metal is $5.0 \times 1 0^{14}$ Hz. Light of frequency $8.0 \times 1 0^{14}$ Hz falls on it. What is the maximum kinetic energy of a photoelectron? ( $h = 6.63 \times 1 0^{- 34}$ J s)
What is the quark composition of a proton?
Light of wavelength 550 nm passes through a diffraction grating with 300 lines per millimetre. What is the angle of the first-order maximum?
In a double-slit experiment the slit separation is 0.20 mm, the screen is 2.0 m from the slits and the wavelength is 600 nm. What is the fringe spacing?
A ray passes from air into glass. The angle of incidence is 45° and the angle of refraction is 28°. What is the refractive index of the glass?
What is the critical angle for glass of refractive index 1.5?
What is the speed of light in glass of refractive index 1.5? ( $c = 3.00 \times 1 0^{8}$ m/s)

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