Question # 1

When we apply reverse bias to a junction diode it

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Lowers the potential barrier

Raises the potential barrier

Increase the majority carrier current

Decrease the majority carrier current

What is the ratio of r.m.s velocity for O₂ to H₂?

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1/4

4

√4 : 1

1 : √4

A couple produces

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Purely linear motion

Purely rotational motion

Linear and rotational motion

No motion

In which region of electromagnetic spectrum does the Lyman series of hydrogen atom lie

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Ultraviolet

Infra red

Visible

X-ray

The structure of solids is investigated by using

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Cosmic Rays

X-rays

Intra red Radiation

y-rays

When sound waves travel from air to water which of these remains constant?

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Velocity

Frequency

Wavelength

All the above

At 0° K which of the following properties of a gas will be zero?

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Kinetic energy

Potential energy

Vibrational enegy

Density

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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NAT I Medical Physics MCQs With Answers

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