A laser emits a cylindrical beam of light 4.0 mm in diameter. The average power of...

A laser emits a cylindrical beam of light 4.0 mm in diameter. The average power of the laser is 2.8 mW . The laser shines its light on a perfectly absorbing surface.

How much energy does the surface receive in 14 s ?

What is the radiation pressure exerted by the beam?

Expert Solution

If the light beam falls in a perfectly reflecting surface the radiation pressure will be twice of the pressure on a perfectly absorbing surface as the change in momentum is double for reflecting surface than the absorbing surface.

genius_generous answered 5 months ago

A particular laser pointer emits a beam with an average power of 5.00 mW, and the...

A particular laser pointer emits a beam with an average power of 5.00 mW, and the beam has a circular cross-section with a diameter of 3.00 mm. The beam is linearly polarized. The average intensity of the light is 707.7 W/m2. Determine the following. (a) the amplitude of the oscillating electric field in the laser beam (V/m) (b) the amplitude of the oscillating magnetic field in the laser beam (T)

A pointer laser has an average output power of 0.9 mW and a beam diameter of...

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 laser had a power output of 2mW and a beam diameter of 2mm. (A) what...

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 small helium-neon laser emits red visible light with a power of 5.30 mW in a...

A small helium-neon laser emits red visible light with a power of 5.30 mW in a beam that has a diameter of 2.30 mm . A) What is the amplitude of the electric field of the light? Express your answer with the appropriate units. B) What is the amplitude of the magnetic field of the light? C) What is the average energy density associated with the electric field? Express your answer with the appropriate units. D) What is the average...

An instructor wishes to determine the wavelength of the light in a laser beam.

An instructor wishes to determine the wavelength of the light in a laser beam. To do so, she directs the beam toward a partition with two tiny slits separated by 0.185 mm. An interference pattern appears on a screen that lies 4.80 m from the slit pair. The Instructor's measurements show that two adjacent bright interference fringes lie 1.59 cm apart on the screen. What is the laser's wavelength (in nm)?

A laser produces 22.0 mW of light. In 4.00 hr , the laser emits 6.04×1020 photons....

A laser produces 22.0 mW of light. In 4.00 hr , the laser emits 6.04×1020 photons. What is the wavelength of the laser?

A laser produces 25.0 mW of light. In 4.00 hr , the laser emits 6.04×1020 photonsWhat...

A laser produces 25.0 mW of light. In 4.00 hr , the laser emits 6.04×1020 photonsWhat is the wavelength of the laser?

A small He-Ne laser produces a 632.8 nm beam with an average power of 3.5 mW...

A small He-Ne laser produces a 632.8 nm beam with an average power of 3.5 mW and diameter of 2.4mm a) How many photons per second are emitted by the laser? b) What is the amplitude of the electric field inside the beam? (Hint: You should consult your EP book, the internet, or equation 3.10 for this problem) c) How does this electric field compare with one produced by a 100W light bulb at a distance of 1 meter?

A monochromatic light source emits 164 W of average electromagnetic power uniformly in all directions. The...

A monochromatic light source emits 164 W of average electromagnetic power uniformly in all directions. The speed of light is 3 � 10^8 m/s. Calculate the average electric-field energy density 4 m from the source. Answer in units of J/m3 . (uE=1/2 E0E2) Calculate the average magnetic-field energy density at the same distance from the source. uE=1/2 E0(cB)2 Find the wave intensity at this location. What is the pressure exerted by the light on a mirror located at the same...

Lidar, for light detection and ranging, emits invisible laser beams that capture the light reflected from...

Lidar, for light detection and ranging, emits invisible laser beams that capture the light reflected from distant objects. Lidar acts as the “eyes” in self-driving cars. More companies, such as Google and Nissan, have been installing lidar in their self-driving cars, increasing the quantity of lidar systems sold. Once costing about $85,000, lidar systems prices have been steadily decreasing. Which of the answer choices best explains these occurrences in the lidar market? a. The U.S. Federal Government’s Office of Science...

Question