What color are photons with wavelength 1000 nm? Spectral parts IR-A UV VIS IR-B 2.5 2.0 1.5 1.0 0.5 0.0 500 1000 1500 2000 2500 3000 Photon wavelength [nm] violet blue green red invisible infrared (because the wavelength is longer than red) invisible ultraviolet (because the wavelength is shorter than violet) Spectral irradiance [W/m?nm]

A photon of wavelength 1.50 × 10-10 m is scattered at an angle of 90° in the Compton effect. The wavelength of the scattered photon is O 1.49 × 10-10 m O 1.50 × 10-10 m O 1.48 × 10-10 m O 1.51 x 10-10 m O 1.52 x 10-10 m

How many photons per second are emitted by the antenna of a microwave oven if its power output is 1 kW at a frequency of 2560 MHz?  photons/s

Your eyes have three different types of cones with maximum absorption at 437 nm, 533 nm, and 564 nm. What photon energies correspond to these wavelengths?

Use the following number convention for this question. 1 Red 2 Blue 3 Ultraviolet 4 Violet 5 Infrared 6 Green A student is asked to predict the type of EMR emitted when the electron in a hydrogen atom drops from a higher level to a lower level. The transitions are . n = 8 to n = 5 then the EMR is n = 4 to n = 2 then the EMR is n = 3 to n = 1 then the EMR is n = 3 to n = 2 the the EMR is Which of these students is correct? Student W said 5631 Student X said 3651 Student Y said 1642 Student Z said 4613

How many 890-nm photons does it take to have the same total energy as five 178-nm photons? ____photons

How many photons are emitted per second from a semiconductor laser which emits 0.75 mW of light at a wavelength of 540 nm? O 239E+15 O 2.04E+15 O 2.85E+15 O 3.21E+15

An X-ray photon has a wavelength of 0.01 nm. What is the de Broglie wavelength of an electron that has the same energy as the X-ray photon? O 1.5 X 10-3 nm O 3.0 X 10-3 nm O 3.5 X 10-3 nm O 4.0 X 10-3 nm O 2.0 X 10-3 nm O 2.5 X 10-3 nm

What is the energy of an ultraviolet photon with wave- length 139 nm?