Q#1 What is angle between radius and centrepital acceleration?
a.0 b.90 c.180 d. 270
Answer is 180 degree , because redius is directed outward and centrepital acceleration is directed toward center of circle
Q#2 If Area of plates and and separation between two parallel plates capacitor are doubled then the capacitance will become;
a. doubled b. unchanged c.halved. d increase 4 times
Answer is " unchanged"; because capacitance is directly proportional to area and inversely proportional to the distance between plates of capacitor
Q#3 The angle between equipotential surface and electric lines of force is?
A.0 b.90 c.180 d.270
Answer is 90 degree; Because equipotential surface is circular path around a charge and electric lines of force are coming outward from charge.
Q#4 Newton supported _______ nature of light.
a. particle b.wave c. dual nature d.none of them
Answer is Particle nature.
Q#5 Light wave can;
a. can be polarized b.need material for propagation c.do not need any material for propagation d.both a&c
Answer is both A&C; because light is electromagnetic wave.
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