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aadg physics
Nature of light
Question Answer
Which theory, waves or particle of light, is the one that scientists currently believe is correct? wave - particle duality.
What is the value of the Planck's constant? 6.63 x 10^-34
What is the equation for the energy of the photons? E = hf
What is the equation for the radiation flux? F = P / A
What is the name give to the particles of light? Photons
What is the equation for the speed of wave? speed = wavelength / time
Points that are a whole wavelength apart oscillate . . . in phase
Points that are wavelength / 2 apart oscillate in . . . antiphase
What is the principle of superposition? Where two or more waves meet, the total displacement at any point is the sum of the displacements that each individual wave would cause at that point.
What is the lowest frequency at which resonance occurs? Fundamental Frequency OR First Harmonic
What is a standing wave? Intereference between two waves travelling in opposite directions.
When does resonance occur? When the frequency of vibration of the cord is increased.
The angle of incidence is equal to . . . The angle of reflection