PHY101 Midterm Past Paper 1

PHY101 Mid Term

A net torque applied to a rigid object always tends to produce:

1. rotational equilibrium
2. linear acceleration
3. angular acceleration
4. rotational inertia
5. 12.6 rad/s
6. 1.57 rad/s
7. 2.0 rad/s
8. 6.3 rad/s

In simple harmonic motion, the restoring force must be proportional to the:

1. amplitude
2. frequency
3. velocity
4. displacement

Correct answer: displacement

Mercury is a convenient liquid to use in a barometer because:

1. it is a metal
2. it has a high boiling point
3. it expands little with temperature
4. it has a high density

Correct answer: it has a high density

The units of the electric field are:

PHY101 Mid Term

1. J/m
2. J/(C·m)
3. J/C
4. J·C

Correct answer: J/m

A farad is the same as a

1. J/V
2. V/J
3. C/V
4. V/C

Correct answer: J/V

We desire to make an LC circuit that oscillates at 100 Hz using an inductance of

Q2. 5H. We also need a capacitance of:

1. 1 F
2. 1mF
3. 1 μF
4. 100 μF

Correct answer: 100 μF

The wavelength of red light is 700 nm. Its frequency is ___________________.

1. 4.30 * 104 Hertz
2. 4.30 * 103 Hertz
3. 4.30 * 105 Hertz
4. 4.30 * 102 Hertz

Correct answer: 4.30 * 105 Hertz

Which of the following statements is NOT TRUE about electromagnetic waves?

1. Electromagnetic waves satisfy the Maswell's Equation.

PHY101 Mid Term

1. Electromagnetic waves can not travel through space.
2. The receptions of electromagnetic waves require an antenna.
3. The electromagnetic radiation from a burning candle is unpolarized. Radio waves and light waves are ____________________________.
4. Longitudinal waves
5. Transverse waves
6. Electromagnetic and transverse both
7. Electromagnetic and longitudinal both

Wien's Law states that, lmax = ________ K.

1. 2.90 * 10-3 Hertz
2. 2.90 * 10-3 s
3. 2.90 * 10-3 kg
4. 2.90 * 10-3 m

Correct answer: 2.90 * 10-3 m

Interference of light is evidence that:

1. the speed of light is very large
2. light is a transverse wave
3. light is a wave phenomenon
4. light is electromagnetic in character

Correct answer: light is a wave phenomenon

Fahrenheit and Kelvin scales agree numerically at a reading of:

1. -40
2. 0
3. 273

Correct answer: -40