Which are uses for microwaves?

sterilising surgical instruments

A line perpendicular to the reflecting surface at the point of incidence

A line parallel to the reflecting surface at the point of incidence

A line diagonal to the reflecting surface at the point of incidence

Test

Waves

robert england 12 preguntas

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1In a transverse wave the oscillations are perpendicular to the direction of energy transfer
1. AVerdadero
2. BFalso
2Transverse waves cannot travel through a vacuum
1. AVerdadero
2. BFalso
3Frequency is measured in...
1. AOhms
2. BHertz
3. Cm/s
4When light enters a more dense medium it is refracted
1. Atowards the normal
2. Baway from the normal
5Waves are not refracted if they are travelling along the normal
1. AVerdadero
2. BFalso
6Which are true?
1. AElectromagnetic waves are transverse
2. BSound are transverse
3. CSome waves transfer energy
4. DIn longitudinal waves, there are compressions and rarefactions
5. EIn longitudinal waves, there are compressions and expansions
7Which are uses for microwaves?
1. Aremote controls
2. Bsterilising surgical instruments
3. Cmobile phones
4. Dsatellite television
5. Ebluetooth
6. Fsecurity marking
8Long exposure to electromagnetic waves can cause serious damage to cells in our bodies
1. AVerdadero
2. BFalso
9What is the range of human hearing?
1. A200 - 20000 Hz
2. B20 - 2000 Hz
3. C20 - 200000
4. D20 - 20000Hz
5. E200 - 2000 Hz
10When waves are reflected, the angle of incidence = angle of refraction
1. AVerdadero
2. BFalso

Descripción: Test sobre Waves, creado por robert england el 22/11/2017.
Autor: robert england
Idioma: English
Visitas: 3
Etiquetas: cambridge igcsephysics wavesfrequencyquizelectromagneticspectrumkey stage 3
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