961.  On a cold day when a room temperature is 15C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15C, because

a

  Plastics have a lower density than metals

b

 Plastics have a higher thermal conductivity than metals

c

 Metals have higher thermal capacity than plastics

d

 Metals are good conductor of heat

Answer & Explanation
Answer : Option D
Explanation :

962.  Point 'A' is at a lower electrical potential than point 'B'. An electron between them on the line joining them will

a

  Move at right angles to the line joining A and B

b

 Remain at rest

c

 Move towards B

d

 Move towards A

Answer & Explanation
Answer : Option C
Explanation :



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