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PHYSICS SELF TEST QUIZ 004

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#1. Three cells each of e.m.f 2 V are connected in parallel. What is the effective e.m.f of the arrangement?

#2. Which one of the following electromagnetic waves has the highest penetrating power?

#3. A trolley of mass 1.5 kg moves with an acceleration of 2 ms-2 when pulled by an elastic cord. 1f the tension in the cord is 5 N, find the frictional force

#4. The deflection of cathode rays by an electric field is due to the

#5. In an electrical appliance, a fuse is connected to the live wire in order to

#6. When no external forces act on two bodies in a collision, the total momentum of the bodies

#7. A body starts from rest and accelerated uniformly at a rate of 8 ms2. Find the time it takes to cover a distance of 100 m.

#8. Which one of the following optical devices can be used as a solar concentrator?

#9. The force which holds the molecules of water together is called

#10. When no external forces act on two bodies in a collision, the total momentum of the bodies

#11. A heating element of resistance 40 C2 produces 360 kJ of heat in 5mins. Find the current flowing through the element.

#12. Which one of the following statements is correct about diffusion?

#13. An atom becomes positively charged when it loses an electron because ....

#14. S is a mode of heat transfer in glass but not vacuum and T is a mode of heat transfer in vacuum identify S and T,

#15. Two objects F and Q are placed along a straight line in front of a plane minor. If Q is 1m from the mirror and the image of P is 4 m from Q, find the distance P from the mirror.

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