Question

*showing work is not required

Question 5 (1 point)

In the Photoelectric Effect, decreasing the intensity (amplitude) of light:

Question 5 options:

Increases the energy of ejected electrons.

Decreases the energy of ejected electrons.

Increases the current in the circuit.

Decreases the current in the circuit.

Question 6 (1 point)

Electrons would be ejected from silver if the incident light had a frequency of:

Question 6 options:

1.03 x 1015 Hz

1.02 x 1015 Hz

1.01 x 1015 Hz

None of the options are correct.

Question 7 (1 point)

What is the mass equivalent of an x-ray with a frequency of 5.63 x 1017 Hz?

Question 7 options:

4.14 x 10-33 kg

2.59 x 10-14 kg

1.24 x 10-24 kg

None of the options are correct.

Question 8 (1 point)

What is the frequency of a photon with a momentum of 1.21 x 10-24 kg m/s?

Question 8 options:

0.0877 Hz

5.48 x 1017 Hz

5.48 x 10-10 Hz

There is insufficient information to answer the question.

Question 9 (1 point)

At times, Ontario uses about 8.0 x 1013 J of energy per hour. Determine the amount of mass, converted to energy, that would be required to supply this:

Question 9 options:

0.89 g

2.7 x 105 kg

1.1 x 103 kg

Question 11 (1 point)

Why are de Broglie matter waves generally not seen?

Question 11 options:

They are extremely small.

They are infrared so our eyes can’t detect them.

They only exist if they are not being observed.

They are seen—just look at water waves.

Question 12 (1 point)

The speed of an electron with a de Broglie wavelength of 4.8 x 10-12 m is:

Question 12 options:

1.5 x 108 m/s

9.5 x 1026 m/s

3.5 x 10-15 m/s

There is insufficient information to answer the question.

.

Answer 1

5) In the Photoelectric Effect, decreasing the intensity (amplitude) of light: Decreases the current in the circuit.

6) Electrons would be ejected from silver if the incident light had a frequency of: 1.03 x 10¹⁵ Hz.

7) The mass equivalent of an x-ray with a frequency of 5.63 x 1017 Hz : 4.14 x 10^-33 kg.

8) The frequency of a photon with a momentum of 1.21 x 10-24 kg m/s : 5.48 x 10¹⁷ Hz.

9) At times, Ontario uses about 8.0 x 1013 J of energy per hour. Determine the amount of mass, converted to energy, that would be required to supply this: 0.89 g.

10) The de Broglie matter waves are generally not seen: They are extremely small.

11) The speed of an electron with a de Broglie wavelength of 4.8 x 10-12 m is: 1.5 x 10⁸ m/s.