Mock resit AS

Question 1

Rhyme to remember waves and what they are

Answer 1

Real Men Involve Very Unusual Xylophone Games
Radio Waves - long wavelength and low frequency
Microwaves
Infra red waves
Visible waves
Ultra violet waves
X-ray
Gamma waves- short wavelength and high frequency

Question 2

In refraction what changes and what remains the same

Answer 2

speed changes
frequency remains the same

Question 3

What is snell’s law

Answer 3

n1sin1= n2sin2

Question 4

In a hookes law’s graph what does the area under the graph represent?

Answer 4

the elastic energy

Question 5

Equation for refractive index

Answer 5

RI= C/ C in material
(C is the speed of light)

Question 6

Conditions required for total internal reflection

Answer 6

• only occurs when a wave goes from more dense to less dense
• Angle of incidence needs to be greater than the critical angle

Question 7

What is Hookes Law

Answer 7

The force needed to extend a spring is proportional to the extension of the spring until the limit of proportionality is reached

Question 8

What is elastic strain energy

Answer 8

The internal store of the work done in deforming a material before it reaches its elastic limit

Question 9

spring combination equations

Answer 9

parallel for springs is in series for electricity (k+,k+,k+)
in series for springs is in parallel for a circuit

Question 10

How to calculate the critical angle

Answer 10

sin C = 1/ n
n= refractive index

Question 11

How to calculate the tension in a cable when hanging at an angle?

Answer 11

T cos x= mg

Question 12

How to calculate the resultant force on a slope

Answer 12

mg sin x - F = resultant force
F is friction