Day: March 25, 2016

Waves,Sound & light


QUESTION 1 A diamond glitters in light because of its high refraction index of 2,42 and the small critical angle of the diamond-air boundary. 1. Calculate the critical angle of a diamond-air interface. Take the refraction index of air as 1. (4) The angle…

Work energy & power questions


Two stationary steel balls, A and B, are suspended next to each other by massless, inelastic strings as shown in Diagram 1 below. Ball A of mass 0,2 kg is displaced through a vertical distance of 0,2 m, as shown in Diagram 2 above….

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