. Write [T] for True or [F] for false. ½ x 5 = 2 ½
(a) A feeble sound has large amplitude of vibration. [ ]
(b) Force of friction is due to roughness on the surfaces of the bodies in contact. [ ]
(c) Deforestation has no effect on the rainfall in that area. [ ]
(d) Greenhouse effect causes melting of polar ice. [ ]
(e)Petroleum must be conserved, because it is available in a limited amount in the nature. [ ]
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false
true
true
true
true
t
f
t
t
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