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Physics

Chapter 1 - Electric Current, Ohms Law and Kirchhoffs Laws

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Chapter 2 - Magnetic Effects of Electric Current and Measuring Instruments

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Chapter 3 - Electromagnetic Induction and AC Dynamo and Transformer

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Chapter 4 - Alternating Current AC Circuits

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Chapter 5 - Dual Nature of Wave and Particle

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Chapter 6 - Atomic Spectra and X-Rays

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Chapter 7 - Lasers and Principles

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Chapter 8 - Modern Electronics and Semiconductors

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Quiz

Lesson 1 Quiz: Hydrogen Atomic Emission Spectrum and Production of X-Rays

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1.
STEM Physics Problem 40: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
24.0 Ω
2.67 Ω
16.0 Ω
72.0 Ω
2.
STEM Physics Problem 22: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
24.0 Ω
72.0 Ω
2.67 Ω
16.0 Ω
3.
STEM Physics Problem 39: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
2.67 Ω
72.0 Ω
24.0 Ω
16.0 Ω
4.
STEM Physics Problem 18: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
72.0 Ω
16.0 Ω
24.0 Ω
2.67 Ω
5.
The volume expansion coefficient at constant pressure (alpha_v) and the pressure expansion coefficient at constant volume (beta_p) for all ideal gases have the universal constant value of:
1 / 273.15 K−1 (approx. 0.00366 K−1)
8.314 J/(mol.K)
273.15 K
1.013 x 105 Pa
6.
STEM Physics Problem 26: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
24.0 Ω
2.67 Ω
16.0 Ω
72.0 Ω
7.
STEM Physics Problem 43: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
72.0 Ω
2.67 Ω
16.0 Ω
24.0 Ω
8.
STEM Physics Problem 42: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
16.0 Ω
2.67 Ω
72.0 Ω
24.0 Ω
9.
STEM Physics Problem 8: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
72.0 Ω
16.0 Ω
24.0 Ω
2.67 Ω
10.
In stimulated emission, the emitted photon and the triggering incident photon are characterized by having:
A) Different wavelengths and perpendicular directions
B) The exact same phase, frequency, direction, and polarization
C) A random phase difference of $pi/2$
D) Independent speeds in vacuum
11.
STEM Physics Problem 12: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
72.0 Ω
24.0 Ω
16.0 Ω
2.67 Ω
12.
STEM Physics Problem 17: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
72.0 Ω
24.0 Ω
16.0 Ω
2.67 Ω
13.
STEM Physics Problem 38: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
16.0 Ω
2.67 Ω
72.0 Ω
24.0 Ω
14.
STEM Physics Problem 32: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
24.0 Ω
2.67 Ω
72.0 Ω
16.0 Ω
15.
STEM Physics Problem 9: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
24.0 Ω
2.67 Ω
16.0 Ω
72.0 Ω
16.
STEM Physics Problem 34: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
24.0 Ω
2.67 Ω
72.0 Ω
16.0 Ω
17.
STEM Physics Problem 16: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
72.0 Ω
16.0 Ω
2.67 Ω
24.0 Ω
18.
STEM Physics Problem 7: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
24.0 Ω
2.67 Ω
16.0 Ω
72.0 Ω
19.
According to Wien's Displacement Law, when the absolute temperature of a radiating blackbody increases, the wavelength at peak intensity (\(\lambda_{\max}\)):
B) Decreases proportionally to the inverse of temperature
D) Shifts into the radio frequency spectrum
A) Increases proportionally
C) Remains strictly constant
20.
STEM Physics Problem 37: A copper wire of resistance 8.0 Ω is drawn out uniformly so that its length increases to three times its original value. Assuming constant mass and density, what is the new resistance of the wire?
16.0 Ω
2.67 Ω
72.0 Ω
24.0 Ω
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