Wave Calculations

What is the photoelectric effect?

• When light shines on metals, electrons (photoelectrons) are ejected from their surface.

• The photoelectric effect is the generation of heat in a material when exposed to light.
• The photoelectric effect is the disappearance light off a surface.

• The photoelectric effect is the absorption of light by a material.

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A certain ​ (a)   has to be achieved or the photoelectric effect does not work. For example, red light will not cause electrons to eject because the frequency is ​ (b)   .

• frequency
• too low
• too high
• color
• wavelength

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Match the symbols

• frequency

• 
• Wavelength

• 
• Speed of light

• 

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Where does the photoelectric effect happen in order to power this solar calculator?

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Organize these values into the right categories

Groups:

(a) Speed of light (c)

,

(b) Wavelength (λ)

,

(c) Frequency (f)

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Set up the equation for this problem:

A silicon-sulfur single bond can be broken by a photon with a frequency of 5.66 × 10¹⁴ Hz. What is the wavelength in meters (m) of this photon?

a

b

c

d

e

=

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What is another way we can write the the speed of light (3 x 10^8) in the calculator?

• 3E8

• 3P8

• 3DD

• 3RR

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Convert the following from scientific notation to regular.

• 0.00999

• 3 X 10⁸

• 15000

• 1.5 X 10⁴

• 300000000

• 5.67 X 10¹

• 56.7

• 2.34 X 10^-2

• 0.0234

• 9.99 X 10^-3

Reorder the following wavelengths from shortest (1) to longest (5)

• 1.20 X 10^-11 m

• 4.51 X 10^-5 m

• 9.80 X 10² m

• 1.50 X 10⁵ m

• 2.8 X 10¹² m

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NGSS.HS-PS4-1

Violet light has a wavelength of 4.10 x 10^-12 m. What is the frequency?

Round answer to two decimal points.

Mathematical Equivalence

ON

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