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CEM 141 - Exam 2 (Chapters 2 and 3) (1). Questions & 100% Verified Correct Answers with complete solutions (Latest update CA$11.46   Add to cart
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CEM 141 - Exam 2 (Chapters 2 and 3) (1). Questions & 100% Verified Correct Answers with complete solutions (Latest update

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CEM 141 - Exam 2 (Chapters 2 and 3) (1). Questions & 100% Verified Correct Answers with complete solutions (Latest update

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  • August 15, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • cem 141 exam 2 chapters 2 and 3 1

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CEM 141 - Exam 2 (Chapters 2 and 3)
C) Both - ANS-What is light?

A) A wave
B) A particle
C) Both
D) Neither

C) infrared - ANS-Which has the longest wavelength?

A) X-rays
B) visible
C) infrared

A) X-rays - ANS-Which has the highest frequency?

A) X-rays
B) visible
C) infrared

A) X-rays - ANS-Which has the highest energy?

A) X-rays
B) visible
C) infrared

C) X-rays - ANS-Which e/m radiation has wavelengths on the order of the sizes of atoms?

A) Radiowaves
B) Microwaves
C) X-rays
D) Gamma Rays

In meters:
A) 1.0 x 10^-10 m

In nanometers:
D) 1.0 x 10^-1 nm - ANS-Determine the wavelength of an x-ray with a frequency of 3.0 x 10^18
Hz (c = 3.0 x 10^8 m/s)

In meters:

, A) 1.0 x 10^-10 m
B) 9.0 x 10^26 m
C) 9.0 x 10^-19 m
D) 1.0 x 10^-1 m

In nanometers:
(1 nm = 1 x 10^-9 OR 1 m = 1 x 10^9 nm)
A) 1.0 x 10^-10 nm
B) 9.0 x 10^26 nm
C) 9.0 x 10^-19 nm
D) 1.0 x 10^-1 nm

A) The number of electrons emitted increases - ANS-What happens when you increase the
intensity of UV light?

A) The number of electrons emitted increases
B) The number of electrons emitted decreases
C) Nothing
D) No electrons are emitted

B) The number of electrons emitted decreases - ANS-What happens when you keep the
intensity the same and increase the wavelength (decreasing the frequency) into the violet?

A) The number of electrons emitted increases
B) The number of electrons emitted decreases
C) Nothing
D) No electrons are emitted

D) No electrons are emitted - ANS-What happens when you keep the intensity the same and
increase the wavelength (decreasing the frequency) into the yellow?

A) The number of electrons emitted increases
B) The number of electrons emitted decreases
C) Nothing
D) No electrons are emitted

C) Nothing - ANS-What happens when you keep the yellow light and increase the the intensity?

A) The number of electrons emitted increases
B) The number of electrons emitted decreases
C) Nothing
D) No electrons are emitted

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