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Physics Past Questions and Answers

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Physics Questions

Question 86:

On which of the following is the operation of a moving coil galvanometer based?

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A Magnetic effect of electric current
B Electromagnetic induction
C Chemical reaction produced by electricity
D Force on current carrying conductor in a magnetic field
E Electrical energy and power

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Question 87:

A body is released from rest and allowed to fall freely from a given height under gravity. The kinetic energy at its half-way point is

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A A little above half of its initial energy
B A little below half of its initial energy
C A half of its initioal energy
D A little above its initial energy
E A little below its initial energy

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Question 88:

It is known that a neutron exists in a light atomic nucleus. Which of the following also exists in the nucleus?

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A An electron
B A \(\beta\)-particle
C An \(\alpha\)-particle
D A proton
E An atom

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Question 89:

A weight of 1000 grams hangs from a lever 20cm to the fulcrum. At the left is a 500-gram weight 20cm from the fulcrum, and a 200-gram weight x cm away from the fulcrum. What is the value of x that will make the lever balanced?

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A 50cm
B 20cm
C 10cm
D 30cm
E 70cm

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Question 90:

Radio carrier waves are generated by causing electrons to oscillate rapidly in

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A A microphone
B A television camera
C An antenna
D Coaxial cables
E A transmitter

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