CfE Waves and Radiation

CfE Waves and Radiation

QUESTION 1 What is Light?

QUESTION 2 State the angle of incidence and the angle of reflection in the diagram below.

QUESTION 3 What is the definition of the term ‘refraction’?

QUESTION 4 State the names of the waveeffects at point P and point Q.

QUESTION 5 Redraw the diagram below showing the normal, angle of incidence, angle of refraction and the passage of the ray of light as it leaves the block.

QUESTION 6 State the letters used for angle of incidence and angle of refraction in the diagram below.

QUESTION 7 State the names of the two parts of the eye where refraction will take place.

QUESTION 8 State the names of the two types of sight defect and the corresponding lenses that are used to correct them.

QUESTION 9 Complete the rays of light below to demonstrate how far away objects appear blurred.

QUESTION 10 Redraw the diagram below to show how the sight defect in Q9 is corrected.

QUESTION 11 State the definition of the term ‘critical angle’.

QUESTION 12 State the critical angle of the semi-circular shaped medium below.

QUESTION 13 What is an optical fibre?

QUESTION 14 Complete the path of the ray of light through the optical fibre below.

QUESTION 15 State the definition of the term ‘frequency’ and the unit is it measured in?

QUESTION 16 Calculate the frequency of a source if it produces 7200 waves in 6 minutes.

QUESTION 17 Sketch and label the following two waveforms: • Small amplitude with a large frequency • Large amplitude with a small frequency

QUESTION 18 Compare the speed of sound in the three states of matter in descending order.

QUESTION 19 Draw a fully labelled diagram and use it to describe how you would measure the speed of sound in air.

QUESTION 20 The ultrasonic pulses travelling at 340ms-1have an echo time of 0.002s. Calculate the distance between the rear of the car and the wall.

QUESTION 21 What instrument is used to measure sound level and which unit is it measured in?

QUESTION 22 State the range of human hearing.

QUESTION 23 What is meant by the term ‘ultrasound’ ?

QUESTION 24 How does ultrasound use reflection to build up the picture of an unborn baby in the mothers womb (uterus)?

QUESTION 25 Pneumatic drill operators wear ear protectors. State their purpose and describe how they work.

QUESTION 26 Describe transverse and longitudinal waves in terms of the direction of the waves produced and the vibration of the particles in the wave.

QUESTION 27 Identify the transverse and the longitudinal waves in the diagram below.

QUESTION 28 State the name of one form of longitudinal wave.

QUESTION 29 State the names of nine types of transverse wave.

QUESTION 30 State one factor which is common to all of the waves in the electromagnetic spectrum.

QUESTION 31 State two factors which are different for each of the waves in the electromagnetic spectrum.

QUESTION 32 Which of the following statements is/are true about the members of the electromagnetic spectrum?

QUESTION 33 State the names of the unknown electromagnetic radiations P,Q and R.

QUESTION 34 A signal generator connected to a loudspeaker produces sounds of frequency 6800Hz. Calculate the wavelength of the sounds produced.

QUESTION 35 A Helium-Neon laser emits light of wavelength 670nm. Calculate the frequency of the light.

QUESTION 36 The wave diagram below takes 0.5s to travel the 108m.Calculate or find: a) Amplitude b) Speed c) Wavelength d) the frequency of the waves.

QUESTION 37 Calculate the period of a water wave if 80 waves pass a particular point in 320 seconds.

QUESTION 38 Diffraction is the effect involving waves bending around an obstacle. Does greater diffraction occur with short or long wavelength waves?

QUESTION 39 Redraw the diffraction diagram below with longer wavelength waves.

QUESTION 40 a) In the visible spectrum, does red or violet light have the longest wavelength? b) State which wave effect is taking place in the diagram below.

QUESTION 41 State the member of the EM spectrum involved in the applications below: a)A luggage scanner at an airport? b)Heat treatment from a physiotherapist? c)Radioactive tracing within the body? d)Mobile telephone transmission?

QUESTION 42 The diagram below shows the simple model of an atom. State the names of particles X,Y and Z.

QUESTION 43 State what is meant by the term ‘ionisation’.

QUESTION 44 Which row in the table describes an alpha particle, beta particle and a gamma ray?

QUESTION 45 A radioactive source emits alpha, beta and gamma radiation. Which radiations will be found at X and Y in the diagram below?

QUESTION 46 State the name of a radiation detector.

QUESTION 47 A radioactive tracer is injected into a patient to study the flow of blood. State the two criteria that the tracer should have in terms of half-life and the particles emitted.

QUESTION 48 a)Why do Health and Nuclear Physicists wear film badges throughout their working day? b)What do the film badges consist of? c)What two factors do the film badges monitor?

QUESTION 49 What is the definition of the term ‘activity’? State the activity equation listing all of the quantities and units involved.

CfE Waves and Radiation