Physics: Light Waves Test Corrections

Lydia, a physics student, stands in front of a plane mirror, as shown. Which statements below describe the image Lydia sees when looking toward the mirror? Select TWO correct answers.

• The image appears inside the mirror.

• The image appears in front of the mirror.

• The image appears to be the same size as the object

Which of the following statements is true? A. Lydia's image is upright. B. Lydia's image is inverted. C. Lydia's image is the same size as the student. D. Lydia's image is magnified. E. Lydia's image is smaller than the student.

• A. Lydia's image is upright.

• B. Lydia's image is inverted.

• D. Lydia's image is magnified.

• E. Lydia's image is smaller .

Which of the following statements are true? A. Real Images are upright B. Real Images are inverted C. Virtual Images are inverted D. Real and virtual images are the same.

• A. Real Images are upright

• B. Real Images are inverted

• C. Virtual Images are inverted

• D. Real and virtual images are the same.

The diagram below shows a light ray striking a mirror. What would be the angle of incidence?

• 40°

• 50°

• 100°

• 140°

The diagram below shows a light ray striking a mirror. What would be the angle of reflection?

• A. 40°

• B. 50°

• C. 100°

• D. 140°

Tags

NGSS.MS-PS4-2

The diagram below represents the wavefronts produced by a point source moving to the right in a uniform medium. Observers are located at each of the points shown in the diagram. Select the observer that would experience the lowest frequency of received waves.

• Pink

• Blue

• Green

• Yellow

• Violet

Tags

NGSS.HS-PS4-1

A ray of monochromatic light is incident on an air-sodium chloride boundary as shown in the diagram below. At the boundary, part of the ray is reflected and part of the ray is refracted. Select the area of the diagram where the reflected ray will pass through.

• Air

• Sodium Chloride

• Normal

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

Why are gamma rays more hazardous to human tissue than radio waves or microwaves?

• A. Gamma rays have longer wavelengths, which penetrate tissues deeply.

• B. Gamma rays are damaging to biological cells and DNA.

• C. Gamma Rays scatter off bones, creating harmful byproducts.

• D. Gamma rays interact with water molecules to generate radiation.

Tags

NGSS.HS-PS4-4

What is the wavelength of the wave?

• 6 m

• 3 m

• 2 m

• 5 m

Tags

NGSS.HS-PS4-1

Using the electromagnetic spectrum diagram, identify the type of wave with the shortest wavelength. Select the correct answer.

• Microwaves

• Infrared

• Visible Light

• Radio Waves

• Gamma Rays

Tags

NGSS.HS-PS4-1