ASAP: A laser beam with diameter 2mm is incident on the mirror
which is 2 m...
ASAP: A laser beam with diameter 2mm is incident on the mirror
which is 2 m away and exerts a force of 10^-9N. calculate amplitude
of electric field in beam. calculate the power of the beam
A monochromatic, unpolarized beam of laser light is incident on
a polarizer that is aligned along the vertical direction. The light
has a wavelength of 355 nm. Explain in a complete sentence what
fraction of the incident light passes through the polarizer? If the
light coming out of this polarizer passes through a second
polarizer that is rotated at an angle of 45o with
respect to the first polarizer, what fraction of the original laser
light will come out of...
A beam of wavelength 310 nm from a laser is incident on a metal
with work function 2.7 eV. The power of the laser is 0.15 W.
(a) Does the metal emit photoelectrons? Why?
(b) What is the range of photoelectron kinetic energies emitted
by metal?
(c) What is the range of de Broglie wavelengths of these
photoelectons?
(d) How does result for part (b) change if the laser power is
doubled to 0.30 W?
Thank you.
A
laser had a power output of 2mW and a beam diameter of 2mm. (A)
what is the amplitude of the electric field in the electromagnetic
waves emitted by this device? Find (b) the total energy in a 2
meter length of the laser beam and (c) the momentum transferred to
a perfect mirror by this laser beam. (D) the index of refraction of
water is about 1.33. What is the wavelength in water of a light
wave whose wavelength...
A laser beam with vacuum wavelength 582 nm is incident from air
onto a block of Lucite as shown in the figure below. The line of
sight of the photograph is perpendicular to the plane in which the
light moves. Take θ1 to be 60°. Recall that the index of refraction
of air is 1 and Lucite is 1.50. (a) Find the speed of the light in
Lucite.. m/s (b) Find the frequency of the light in Lucite.. Hz (c)...
A pointer laser has an average output
power of 0.9 mW and a beam diameter of 1.2 mm.
(a) What is the force exerted by the
laser beam on a perfectly reflecting surface ?
(b) Is this force much
larger, smaller, or about the same compared to
the weight of a 0.1 gram drop of water ( 1x10-4x9.8 =
9.8x10-4 Newton )
(c) What is the rms electric field
produced by this laser ?
A 5.00-m-diameter garden pond is 0.500 m deep. Solar energy is
incident on the pond at an average rate of 400 W/m2. If the water
absorbs all the solar energy and does not exchange energy with its
surroundings, how many hours will it take to warm from 16.0 ∘C to
19.0 ∘C?
3. Suppose a beam of particles of mass m and kinetic energy E is
incident from the left on a potential well given by:
U(x) = ?U0 (for 0 < x < L where U0
> 0)
U(x) = 0 ( otherwise )
(a) What is the Schrodinger Wave Equation (S.W.E.) for the
region x < 0 ? (Hint: include both incident and reflected
waves)
(b) What is the S.W.E. for the region x > L ? (Hint: this
will...
A laser of wavelength 200 nm is incident on a metal surface,
which causes the ejection of electrons. The stopping potential is
measured to be 1.66 V.
Use the table below to identify the metal.
Copper
Sodium
Aluminum
Iron
Tungsten
A light beam strikes a piece of glass at a 53.00 ∘incident
angle. The beam contains two wavelengths, 450.0 nm and 700.0 nm,
for which the index of refraction of the glass is 1.4831 and
1.4754, respectively.
Part A
What is the angle between the two refracted beams?