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A student measured the angle of incidence i and the angle of refraction r for a ray of light passing through a transparent block.
(2018)
A student used a narrow beam of monochromatic light and a diffraction grating to determine , the wavelength of the monochromatic light.
In an experiment to verify Joule’s law, a constant current, I, was passed through a heating coil immersed in water.
(a) Draw a labelled diagram to show the forces acting on a skydiver falling with a constant velocity.
(b) A horizontal metre stick is in equilibrium when a weight of 8 N hangs from the 10 cm mark, a weight of 12 N hangs from the 60 cm mark and an unknown weight (X) hangs from the 82 cm mark. The metre stick is supported at its centre of gravity, 50 cm. Ca
