Questions from Modern Physics

Q: X rays with an initial wavelength of 0.900 * 10

X rays with an initial wavelength of 0.900 * 10-10 m undergo Compton scattering. For what scattering angle is the wavelength of the scattered x rays greater by 1.0% than that of the incident x rays?

Q: A 16.0-cm-long pencil is placed at

A 16.0-cm-long pencil is placed at a 45.0° angle, with its center 15.0 cm above the optic axis and 45.0 cm from a lens with a 20.0-cm focal length as shown in Fig. P34.106. (Note that the f...

Q: An ultrashort pulse has a duration of 9.00 fs and

An ultrashort pulse has a duration of 9.00 fs and produces light at a wavelength of 556 nm. What are the momentum and momentum uncertainty of a single photon in the pulse?

Q: A horizontal beam of laser light of wavelength 585 nm passes through

A horizontal beam of laser light of wavelength 585 nm passes through a narrow slit that has width 0.0620 mm. The intensity of the light is measured on a vertical screen that is 2.00 m from the slit....

Q: The cornea behaves as a thin lens of focal length approximately 1

The cornea behaves as a thin lens of focal length approximately 1.8 cm, although this varies a bit. The material of which it is made has an index of refraction of 1.38, and its front surface is convex...

Q: A laser produces light of wavelength 625 nm in an ultrashort pulse

A laser produces light of wavelength 625 nm in an ultrashort pulse. What is the minimum duration of the pulse if the minimum uncertainty in the energy of the photons is 1.0%?

Q: A clean nickel surface is exposed to light of wavelength 235 nm

A clean nickel surface is exposed to light of wavelength 235 nm. What is the maximum speed of the photoelectrons emitted from this surface? Use Table 38.1. From table 38.1:

Q: What would the minimum work function for a metal have to be

What would the minimum work function for a metal have to be for visible light (380–750 nm) to eject photoelectrons?

Q: When ultraviolet light with a wavelength of 400.0 nm falls

When ultraviolet light with a wavelength of 400.0 nm falls on a certain metal surface, the maximum kinetic energy of the emitted photoelectrons is measured to be 1.10 eV. What is the maximum kinetic e...

Q: While interacting with molecules (mainly water) in the tumor tissue

While interacting with molecules (mainly water) in the tumor tissue, each Compton electron or photoelectron causes a series of ionizations, each of which takes about 40 eV. Estimate the maximum number...