H Experiments - Unit 3 - Radiation and Matter

Click on Activity Below	Title	Aim of Experiment
Activity 01A	Interference of microwaves	To investigate a microwave interference pattern and to find the wavelength of microwaves.
Activity 01B	Interference of microwaves	To find the wavelength of microwaves from an interference pattern caused by reflected waves.
Activity 02	Interference of sound	To investigate an interference pattern produced by two sources of sound.
Activity 03A	Interference of laser light	To observe an interference pattern produced by laser light.
Activity 03B	Measurement of wavelength	To measure the wavelength of laser light from measurements taken from an interference pattern.
Activity 04	Comparison of white light spectra	To compare the spectra produced when white light passes through (a) a prism and (b) a grating.
Activity 05	Refractive index of a perspex block	To measure the refractive index n of a perspex block.
Activity 06	Critical angle of a perspex block	To measure the critical angle θc of a perspex block.
Activity 07	Variation of light intensity with distance from a point source of light	To investigate the relationship between the intensity of light and the distance from the light source.
Activity 08	The photoelectric effect	To compare the effect of white light and u.v. radiation on charged electroscopes.
Activity 9	Emission spectra	To calculate the acceleration of a trolley moving down a slope
Activity 10	Laser beam diameter	To measure the beam diameter at various distances from a laser.
Activity 11	Forward and reverse-biased p-n junctions	To measure the variation of current with applied p.d. for a forward and reverse-biased p-n junction.
Activity 12	Photodiode – photovoltaic mode	To measure the frequency of an a.c. suppply using a photodiode in photovoltaic mode.
Activity 13	Forward and reverse-biased photodiode	To investigate the relationship between the current and applied p.d. for a forward and reverse-biased photodiode.
Activity 14	The switching action of an n-channel enhancement MOSFET	To investigate the relationship between the input p.d. and the output p.d. for a MOSFET, and to determine the switching p.d.
Activity 15	Half-value thickness	To measure the half-value thickness of lead for gamma rays