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NAT I Medical Physics MCQs With Answers
Question # 1
The dot product of two vectors is negative when
Choose an answer
They are parallel vectors
They are anti-parallel vectors
They are perpendicular vectors
None of the above is correct
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Question # 2
A cable breaks if stretched by more than 2 mm it is cut into two equal parts how much either part can be stretched without breaking?
Choose an answer
0.25 m
0.5 m
1 mm
2 mm
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Question # 3
In a simple harmonic motion the kinetic energy (KE) and the potential energy (PE), are such that throughout the motion
Choose an answer
KE remains constant
PE remains constant
KE/PE is constant
KE + PE remains constant
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Question # 4
The average power dissipation in a pure capacitor in AC circuit is
Choose an answer
1/2 CV
2
CV
2
2CV
2
Zero
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Question # 5
The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart. with force of repulsion between the spheres to be 10
-19
N is
Choose an answer
25
225
625
1250
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Question # 6
The terminal velocity of a small size spherical body of radius R moving in a fluid varies as
Choose an answer
R
R
2
1/R
(1/R)
2
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Question # 7
A body is dropped from a tower with zero velocity reaches ground in 4s. The height of the tower is about
Choose an answer
80 m
20 m
160 m
40 m
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Question # 8
A force of 10N is acting along y-axis its component along x-axis is
Choose an answer
10N
20N
100N
Zero N
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Question # 9
Which of the following is a scalar quantity
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Density
Displacement
Torque
Weight
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