Category: GRADE 11 PHYSICAL SCIENCES

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…

FARADAY’S LAW


ACIDS AND BASES


Ohm’s Law


If the physical conditions remain constant, the voltage across a resistor is directly proportional to the current through it.   V ∝ I V = kI k = R = resistance V = IR The physical conditions are temperature, pressure and humidity etc. E.g.1 When…

Ohms Law


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