Modern Physics - Test Test

Question 1

Which transition by an electron will release the greatest amount of energy?

Revolt · Accepted Answer

A: A

Question 2

A student analyzes the emission spectrum of an unknown element and observes strong lines at the wavelengths: 656 nm, 486 nm, 434 nm. Which absorption spectrum is the student most likely viewing?

Revolt · Accepted Answer

D: Image with description A line spectrum with one black line in purple, blue, light blue and red.

Question 3

Which gases are found in the unknown sample?

Revolt · Accepted Answer

A: gases W and Z

Question 4

Which best describes how to correct Wilam’s error?

Revolt · Accepted Answer

A: The first result should state that frequencies of light that were lower than the frequency threshold of the metal could not eject electrons.

Question 5

Which statement is supported by this scenario?

Revolt · Accepted Answer

B: For Yanni, the speed of the ball is  23 meters per second , and for the quarterback, the speed of the ball is  15 meters per second .

Question 6

What is the best explanation for why a particle is striking point X?

Revolt · Accepted Answer

D: When the dense, positive alpha particle passes close to a positive nucleus of gold, the alpha particle repels and hits the screen at point X.

Question 7

Which phenomenon does Diego’s diagram illustrate?

Revolt · Accepted Answer

A: gravitational lensing

Question 8

Which describes a relationship based on the general theory of relativity?

Revolt · Accepted Answer

B: Acceleration in space and gravity on Earth have the same effects on objects.

Question 9

Which best explains a difference between Einstein’s general theory of relativity and his special theory of relativity?

Revolt · Accepted Answer

B: His general theory includes uniform and accelerated motion, but his special theory applies only to uniform motion.

Question 10

J.J. Thompson is credited with discovering the

Revolt · Accepted Answer

D: electron.

Modern Physics - Test Test Answers

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