1. A beam of electrons is incident on a single slit that has a width of 1.00 × 10–6 m and a diffraction pattern is observed on a screen located 15.0 m from the slit. The momentum of an individual electron in
the beam is 5.91 × 10–24 kg•m/s. What is the width of the central maximum fringe?
a.
1.33 × 10–4 m
b.
7.50 × 10–3 m
c.
6.67 × 10–4 m
d.
3.37 × 10–3 m
e.
5.87 × 10–5 m
2. Which one of the following is demonstrated by the Compton effect?
a.
time dilation
b.
length contraction
c.
the uncertainty principle
d.
electrons have wave properties
e.
electromagnetic radiation has particle properties
3. Which one of the following quantities is the same for all photons in vacuum?
a.
wavelength
b.
kinetic energy
c.
total energy
d.
frequency
e.
speed
4. The Hubble Space Telescope has an orbital speed of 7.56 × 103m/s and a mass of 11 600 kg. What is the de Broglie wavelength of the
telescope?
a.
5.81 × 10–26 m
b.
8.77 × 107 m
c.
3.78 × 10–40 m
d.
6.63 × 10–34 m
e.
7.56 × 10–42 m
5. White light consisting of wavelengths 380 nm ≤ λ ≤750 nm is incident on a lead surface. For which one of
the following ranges of wavelengths will
photoelectrons be emitted from the lead surface
(work function W0 = 6.63 × 10–19 J)?
a.
380 nm ≤ λ ≤ 410 nm
b.
No photoelectrons will be emitted.
c.
380 nm ≤ λ ≤ 630 nm
d.
380 nm ≤ λ ≤ 750 nm
e.
380 nm ≤ λ ≤ 540 nm
the beam is 5.91 × 10–24 kg•m/s. What is the width of the central maximum fringe?
a.
1.33 × 10–4 m
b.
7.50 × 10–3 m
c.
6.67 × 10–4 m
d.
3.37 × 10–3 m
e.
5.87 × 10–5 m
2. Which one of the following is demonstrated by the Compton effect?
a.
time dilation
b.
length contraction
c.
the uncertainty principle
d.
electrons have wave properties
e.
electromagnetic radiation has particle properties
3. Which one of the following quantities is the same for all photons in vacuum?
a.
wavelength
b.
kinetic energy
c.
total energy
d.
frequency
e.
speed
4. The Hubble Space Telescope has an orbital speed of 7.56 × 103m/s and a mass of 11 600 kg. What is the de Broglie wavelength of the
telescope?
a.
5.81 × 10–26 m
b.
8.77 × 107 m
c.
3.78 × 10–40 m
d.
6.63 × 10–34 m
e.
7.56 × 10–42 m
5. White light consisting of wavelengths 380 nm ≤ λ ≤750 nm is incident on a lead surface. For which one of
the following ranges of wavelengths will
photoelectrons be emitted from the lead surface
(work function W0 = 6.63 × 10–19 J)?
a.
380 nm ≤ λ ≤ 410 nm
b.
No photoelectrons will be emitted.
c.
380 nm ≤ λ ≤ 630 nm
d.
380 nm ≤ λ ≤ 750 nm
e.
380 nm ≤ λ ≤ 540 nm