The light intensity, l, is measured at a distance d away from a lamp. It is found that l is
inversely proportional to square of d. It is observed that l = 180 and d = 7
a) Find the constant of the proportionality and write the equation including l and d. [2]
b) Find the value of l when d = 2. [1]
c) Find the value of d when l = 45.
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Step-by-step explanation:
(ii) 10 stalks of lilies are removed from the bed. A stalk of flower is picked at random
from the remaining stalks. Find the probability that a stalk of rose is picked.
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