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NAT I Medical Physics MCQs With Answers
Question # 1
Two electric bulbs of 200 W and 100 W have same voltage.If R1 and R2 be their resistance respectively then
Choose an answer
R
1
= 2R
2
R
2
= 2R
1
R
2
= 4R
1
R
1
= 4R
2
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Question # 2
Huygen's wave theory of light cannot explain
Choose an answer
Diffraction
Interference
Polarization
Photoelectric effect
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Question # 3
Shunt required in an ammeter of resistance R to decrease its deflection from 30 ampere to 10 ampere is
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R/4
R/3
R/2
R
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Question # 4
When a hydrogen atom is bombarded the atom is excited to the n = 4 state of hydrogen atom.The energy released when the atom falls from n = 4 state to the ground state is
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1.275 eV
12.75 eV
5 eV
8 eV
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Question # 5
A couple produces
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Purely linear motion
Purely rotational motion
Linear and rotational motion
No motion
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Question # 6
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
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6.66 j
15 j
22.5 j
45 j
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Question # 7
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 # 8
The essential distinction between X-rays and y-rays is that
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y-rays have smaller wavelength than X-rays
y-rays emanate from nucleus while X-rays emanate from outer part of the atom
y-rays have greater ionizing power than X-rays
y-rays are more penetrating than X-rays
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Question # 9
With the propagation of a longitudinal wave through a material medium the quantities transmitted in the propagation direction are
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Energy momentum and mass
Energy
Energy and mass
Energy and linear momentum
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