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NAT I Medical Physics MCQs With Answers
Question # 1
A 2 kg body and a 3 kg body have equal momentum if the kinetic energy of 3 kg body is 10 j, the KE of 2 kg body will be
Choose an answer
6.66 j
15 j
22.5 j
45 j
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Question # 2
The twinkling of stars is due to
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The fact that stars do not emit light continuously
The refractive index of the earth's atmosphere fluctuate
Intermittent absorption of star light by its own atmosphere
None of them
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Question # 3
In a Millikan's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19 C. The number of excess electrons on the drop is
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3.9
4
4.2
6
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Question # 4
Which of the following four statements is false?
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A body can have zero velocity and still be accelerated
A body can have a constant velocity and still have a varying speed
A body can have a constant speed and still have a varying velocity
The direction of the velocity of a acceleration is constant
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Question # 5
Which of the modulus of elasticity is involved in compressing a rod to decrease its length?
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Young's modulus
Bulk modulus
Modulus of rigidity
None of the above
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Question # 6
The magnetic moment of a circular coil carrying current is
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Directly proportional to the length of the wire in the coil
Inversely proportional to the length of the wire in the coil
Directly proportional to the square of the length of the wire in the coil
Inversely proportional to the square of the length of the wire in the coil
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Question # 7
Two forces of 10N and 15N are acting simultaneously on an object in the same direction. Their resultant is
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Zero
5N
25N
150N
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Question # 8
The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude then their magnitude are:
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3, 15
4, 14
5, 13
6, 12
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