Light Properties and Calculations

The video tutorial explains how to calculate the energy per photon of yellow light emitted by excited sodium. It introduces the concept of energy, Planck's constant, and frequency, and demonstrates how to use these to find energy. The tutorial covers the speed of light and wavelength, unit conversion, and solving equations. A practice problem is provided to reinforce learning.

What is the wavelength of the yellow light emitted by excited sodium?

• 450 nanometers

• 589 nanometers

• 522 nanometers

• 700 nanometers

In the equation E = hv, what does 'h' represent?

• Planck's constant

• Speed of light

• Energy

• Wavelength

What is the value of Planck's constant used in the calculation?

• 5.75 x 10^14 Hz

• 6.63 x 10^-34 J·s

• 1.0 x 10^-9 m

• 3.0 x 10^8 m/s

Which equation relates the speed of light to wavelength and frequency?

• E = hv

• c = wavelength * frequency

• V = IR

• F = ma

What is the speed of light used in the calculations?

• 1.0 x 10^-9 m

• 3.0 x 10^8 m/s

• 5.75 x 10^14 Hz

• 6.63 x 10^-34 J·s

How do you convert nanometers to meters?

• Multiply by 10^-9

• Divide by 10^9

• Multiply by 10^9

• Divide by 10^-9

What is the frequency of the yellow light calculated in the video?

• 5.75 x 10^14 Hz

• 5.093 x 10^14 Hz

• 3.38 x 10^-19 Hz

• 6.63 x 10^-34 Hz

What is the energy per photon of the yellow light?

• 6.63 x 10^-34 J

• 3.38 x 10^-19 J

• 1.0 x 10^-9 J

• 5.75 x 10^14 J

What is the wavelength of the green light in the practice problem?

• 589 nanometers

• 522 nanometers

• 700 nanometers

• 450 nanometers

What is the frequency of the green light calculated in the practice problem?

• 3.38 x 10^-19 Hz

• 5.093 x 10^14 Hz

• 6.63 x 10^-34 Hz

• 5.75 x 10^14 Hz