Physics College

Which of the following are examples of light behaving like an electromagnetic wave? Choose all that apply.

Group of answer choices

Compton scattering

interference through two slits

diffraction through one slit

photoelectric effect

refraction

Answers

Answer 1

The examples of light behaving like an electromagnetic wave are Compton scattering, interference through two slits, diffraction through one slit, and refraction.

Light is a type of electromagnetic radiation that is composed of electromagnetic waves. Light behaves like an electromagnetic wave in several ways. Electromagnetic waves are transverse waves that travel through a vacuum. They don't need a medium to propagate. Light can behave like an electromagnetic wave in several ways. Let's discuss each option in the question.
Compton scattering: Compton scattering is a phenomenon in which an incident X-ray or gamma-ray photon collides with an electron resulting in a scattered photon and a recoiling electron. It can only be explained by assuming that light behaves as both waves and particles. Therefore, Compton scattering is an example of light behaving like an electromagnetic wave.
Interference through two slits: When light passes through two narrow slits separated by a distance that is small compared to the wavelength of the light, it will diffract and interfere. The interference pattern will be characterized by bright and dark fringes. This phenomenon is an example of light behaving like an electromagnetic wave.
Diffraction through one slit: When light passes through a single narrow slit, it diffracts and creates an interference pattern similar to that produced by two slits. This phenomenon is an example of light behaving like an electromagnetic wave.
Photoelectric effect: The photoelectric effect is a phenomenon in which electrons are ejected from a metal surface when light shines on it. The photoelectric effect can be explained by assuming that light behaves as a stream of particles or photons. Therefore, the photoelectric effect is not an example of light behaving like an electromagnetic wave.
Refraction: Refraction is the bending of light as it passes from one medium to another, such as from air to water. It can be explained by assuming that light behaves like an electromagnetic wave. Therefore, refraction is an example of light behaving like an electromagnetic wave.

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Related Questions

report of "fan made of plastic bottle" with string

Answers

Fan made of plastic bottle is an innovative way to reuse plastic bottles and can be easily made at home. This can be done by following simple steps, and a few materials are required to make it. The fan can be created by using a plastic bottle, scissors, string, a ruler, and a marker.

First, the bottle needs to be cut into half, and the upper part needs to be cut into three equal sections, then fold each section to make a blade. With the help of a ruler and marker, make a mark on each section, then make a hole in the center of each blade. Insert a string through the holes and tie the ends of the strings. The fan is ready to use by holding the string and swinging it back and forth.

The use of plastic bottle fans can significantly reduce the number of plastic waste and provide a practical solution to avoid environmental pollution. Besides, it is easy to make, and the materials are readily available, which can be used for various occasions, such as picnics, camping, or any outdoor activities.

In conclusion, the creation of a fan made of plastic bottle with string is an excellent way to reuse plastic bottles and can be made with simple steps. This project encourages everyone to contribute to environmental protection by utilizing what is available at home and reducing the number of plastic wastes.

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Suppose that you drop a marble from the top of a building, which is about 890 m tall. If you ignore air resistance, how long will it take for the marble to hit the ground?

Answers

The marble will take approximately 12 seconds to hit the ground, ignoring air resistance.

To solve this problem we can use the equations of motion that are given as below:

Vf = Vi + atX =[tex]Vi*t + 1/2*a*t^2Vf^2 = Vi^2 + 2*a*X[/tex]

Where:Vf = final velocity, Vi = initial velocity, a = acceleration, X = distance traveled, and t = time taken.For a freely falling object near the surface of the earth, we can assume that the acceleration due to gravity is constant at 9.8 [tex]m/s^2[/tex] (downward direction).

At the top of the building, the initial velocity is zero. Hence, using the equation, [tex]Vf^2 = Vi^2 + 2*a*X[/tex], we can find the final velocity, Vf, just before the marble hits the ground.

So, we have:[tex]Vf^2 = 2*a*X[/tex]

where, X = 890 m (height of the building) and

a = 9.8[tex]m/s^2Vf[/tex]

  = sqrt(2*9.8*890) ≈ 118 m/s

Now, using the equation, Vf = Vi + at, we can find the time, t, taken by the marble to reach the ground. So, we have:118 = 0 + 9.8*t.

Therefore, t = 118/9.8 ≈ 12 seconds.

Therefore, the marble will take approximately 12 seconds to hit the ground, ignoring air resistance.

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imagine you have been closed in a car where their pieces of cardboard and 2 mirrors,a masking tape and a pair of scissors as you're inside you hear your friends talking about something funny using the materials inside the car design an instrument you can use to see what is happening outside support your design with the scientific report ​

Answers

To design an instrument using the available materials (cardboard, mirrors, masking tape, and scissors) that would allow you to see what is happening outside the car, we can create a periscope-like device. Here’s a suggested design along with a brief scientific explanation:

Design:

1. Take one of the pieces of cardboard and cut out a rectangular shape, approximately 15 cm by 20 cm, to serve as the main body of the instrument.
2. Cut two smaller rectangular pieces from the cardboard, each measuring about 7 cm by 10 cm. These will be used as the mirrors.
3. Using the masking tape, attach one mirror to each end of the main cardboard piece, angled at 45 degrees relative to the main body.

Scientific Explanation:
The principle behind this design is the reflection of light. When light hits a mirror, it undergoes reflection, bouncing off the mirror’s surface at an equal angle to the incident angle. By placing the mirrors at 45-degree angles, the light entering one mirror will reflect off it and into the second mirror, ultimately reaching your eyes.

As you look through one end of the periscope-like instrument, the light from outside will enter the first mirror, reflect off it, and then reflect off the second mirror, finally reaching your eyes. This allows you to see objects and events occurring outside the car, even though you are inside.
Final answer:

To see what is happening outside the car using the available materials, you can design a periscope using mirrors, cardboard, masking tape, and scissors.

Explanation:

To design an instrument to see what is happening outside the car, we can make a periscope using the materials available. A periscope uses mirrors to reflect the light and images, allowing us to see around corners or over obstacles. Using the mirrors, cardboard, masking tape, and scissors, we can create a periscope by positioning one mirror at a 45-degree angle, reflecting the image towards the second mirror which is positioned horizontally to observe the outside environment. By adjusting the angles and positions of the mirrors, we can see what is happening outside the car without directly looking out.

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