Planck's Equation

Multiple Choice

What is the frequency of UV light that has an energy of 2.39 × 10 ^-18 J? 

• 2.32 x 10⁹ Hz
• 3.60 x 10¹⁵ Hz
• 1.58 x 10^-51 Hz
• 3 x 10⁸  m/s

Multiple Choice

As the frequency of an electromagnetic wave increases, the amount of energy in that wave ___________.

• increases.
• decreases.
• stays the same.

Multiple Choice

In Planck's energy equation, what is c?

• speed of light

• Planck's constant

• energy

• wavelength

• frequency

Multiple Choice

In Planck's energy equation, what is λ?

• speed of light

• Planck's constant

• energy

• wavelength

• frequency

Multiple Choice

In Planck's energy equation, what is E?

• speed of light

• Planck's constant

• energy

• wavelength

• frequency

Multiple Choice

In Planck's energy equation, what is h?

• speed of light

• Planck's constant

• energy

• wavelength

• frequency

Multiple Choice

What is the typical units of measurement for the "E" in the following equation: 
E_photon= h x f

• joules
• meters
• meters/seconds
• hertz

Multiple Choice

What is the energy of light whose wavelength is 4.06 x 10^-11 m? 

• 2.69 x 10^-44 J
• 1.63 x 10^-23 J
• 4.90 x 10^-15 J
• 8.97 x 10^{-53 J}

Multiple Choice

What is the frequency of radiation which has an energy of 219.1 kJ per mole (of these photons)?

• 615.9 x 10¹⁴ Hz

• 1.624 x 10¹⁴ Hz

• 1.058 x 10^-10 Hz

• 5.489 x 10¹⁴ Hz

• 3.588 x 10^-19 Hz

Multiple Choice

What is the wavelength, in nm, of radiation which has an energy of 3.371 x 10^-19 joules per photon?

• 655.9 nm

• 152.5 nm

• 170.0 nm

• 590.0 nm

• 745.1 nm