Electromagnetic Waves (Wave Equation/Planck Relation

What is the speed of light in a vacuum?

• $3\times10^8$ m/s

• $3\times10^{-8}$ m/s

• $6.63\times10^{34}$ J s

• $6.63\times10^{-34}$ J s

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

What is the value of Planck's constant?

• $3\times10^8$ m/s

• $3\times10^{-8}$ m/s

• $6.63\times10^{34}$ J s

• $6.63\times10^{-34}$ J s

Tags

NGSS.HS-PS4-3

Which of the following is TRUE about the frequency and energy in electromagnetic waves?

• As the frequency of an EM wave increases, the energy also increases.

• As the frequency of an EM wave increases, the energy decreases.

• The Planck's constant increases when the frequency and energy of an EM wave increase.

• There is no relation between the energy and the frequency of an EM wave.

What is the frequency of green light that has a wavelength of 500 nm?

•  $6\times10^{-3}$  Hz
  

•  $6\times10^5$  Hz

•  $6\times10^{14}$  Hz

•  $6\times10^{-16}$  HZ

Tags

NGSS.HS-PS4-1

What is the frequency of red light that has a wavelength of  $7.5\ \times10^{-7}$  m?

•  $4\times10^{-14}$  Hz
  

•  $4\times10^{14}$  Hz

•  $2.5\times10^{14}$  Hz

•  $2.5\times10^{-14}$  HZ

Tags

NGSS.HS-PS4-1

A radio station utilizes frequencies between commercial AM and FM. What is the frequency of a 11.12-m-wavelength channel?

•  $26.96$  kHz
  

•  $26.96\$  MHz

•  $26.96$  GHz

•  $26.96\$  THz

Tags

NGSS.HS-PS4-1

What is the wavelength of a microwave transmission at 1,575.42 MHz?

•  $1.9\times10^{-14}$  m
  

•  $1.9\times10^{-9}$  m

•  $0.19$  m

•  $1900$  m

Tags

NGSS.HS-PS4-1

Some radar systems detect the size and shape of objects such as aircraft and geological terrain. Approximately what is the smallest observable detail utilizing 500-MHz radar?

•  $0.6$  m
  

•  $6.0$  m

•  $60.0$  m

•  $6.0\times10^{-2}$  m

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

Calculate the energy of a  photon of light with a frequency  of 6.165 x 10^14 Hz.

•  $4.087\times10^{19}$  J
  

•  $4.087\times10^{-19}$  J

•  $4.087\times10^{49}$  J

•  $4.087\times10^{-49}$  J

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Calculate the frequency and the energy of blue light that has a wavelength of 400 nm.

•  $f=7.5\times10^2\ Hz,\ \ E=3\times10^8J$  J
  

•  $6.63\times10^{-34}\ Hz\ ,\ E=3\times10^8\ J$  J

•  $f\ =\ 7.5\times10^{14}\ Hz\ ,\ E=4.97\times10^{-19}J$  J

•  $none\ of\ the\ above$  J

Tags

NGSS.HS-PS4-1