# 11 2 3 4 5 6 7 8 9 10 11 12 13 14 15234567891011 12131415 IB WAVES SPECIAL.

## Presentation on theme: "11 2 3 4 5 6 7 8 9 10 11 12 13 14 15234567891011 12131415 IB WAVES SPECIAL."— Presentation transcript:

11 2 3 4 5 6 7 8 9 10 11 12 13 14 15234567891011 12131415 IB WAVES SPECIAL

A:B: FrequencyAngular frequency £100 The largest displacement of a wave is called the C:D: PhaseAmplitude

Excellent!Excellent!

Unlucky!Unlucky! That’s incorrect

A:B: Rayphase £200 Perpendicular to the wavefront is the… C:D: Angle of incidenceRefractive index

Excellent!Excellent!

SorrySorry That’s incorrect …

A:B: Amplitude Period £300 The shortest distance between parts of a wave that are moving in phase… C:D: WavelengthTuesday

FantasticFantastic

Oh dear! That’s incorrect …

A:B: 2πf2πf2π/f £500 Angular frequency (ω) = C:D: f/2π2πf22πf2

BrilliantBrilliant

SorrySorry That’s incorrect …

A:B: Transverse waves Stationary waves £1,000 When are oscillations are parallel to the direction of energy transfer? C:D: Simple harmonic motion Longitudinal waves

Well done!

Unlucky!Unlucky! You should know this!

A:B: Gamma rays X - rays £2,000 Wavelength of about 1 x 10 -10 m? C:D: Visible lightUltra-violet `

Super!Super!

Oh no! That’s incorrect !…

A:B: (n + ½)λ½λ½λ £4,000 You get constructive interference when the path difference of 2 waves is… C:D: fλfλnλnλ

Very good!

IncorrectIncorrect So near and yet so far!

A:B: x = ox = ω £8,000 The acceleration of a SHM oscillator is a maximum when … C:D: x = x o x = -ω 2 x o `

Very good!

Sorry!Sorry! That’s incorrect … I suck!

A:B: 17791979 £16,000 When was Einstein born? C:D: 16791879

Very good!

UnluckyUnlucky That’s incorrect …

Digestion A:B: x = 0 £32,000 For an object in SHM the velocity is a maximum when… C:D: x = ω Digestion x = fλ x = x o

Brilliant!Brilliant!

Unfortunately…Unfortunately… That’s incorrect ! I suck.

A:B: Critical dampedOverdamped £64,000 A system makes several oscillations before coming to rest….. C:D: UnderdampedNatural frequency

Well done!

I’m sorry That’s incorrect …

A:B: Forced vibrationsNatural oscillations £125,000 If a force is applied at a different frequency to the natural frequency we get C:D: Resonant oscillationsg/cm 3

Very good!

IncorrectIncorrect You should have got that one!

A:B: Potential energyKinetic energy £250,000 ? = ½mω 2 x o 2 C:D: intensityTotal energy

Excellent!Excellent!

Wrong Choice! That’s incorrect … I suck.

A:B: J.m -2 W.m -3 £500,000 Unit of wave intensity? C:D: W.m -2 Decibel

Very Good!

Sorry!Sorry! That’s incorrect … I suck.

A:B: £ 1,000,000 Destructive interference occurs when the phase difference of two waves is C:D: π 2π2π π/4 π/2

Fantastic!Fantastic!

UnluckyUnlucky You were nearly a millionaire! I wished I was as clever and handsome as Mr Brockman.

Mr Brockman thanks you for playing! Mr Brockman thanks you for playing! Go home and learn your definitions! Go home and learn your definitions!

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