Podcast
Questions and Answers
A light ray travels from air into glass. Which of the following statements is true regarding its speed and wavelength?
A light ray travels from air into glass. Which of the following statements is true regarding its speed and wavelength?
- Speed and wavelength both decrease. (correct)
- Speed increases, wavelength decreases.
- Speed and wavelength both increase.
- Speed decreases, wavelength increases.
An object is placed 20 cm in front of a concave mirror with a focal length of 10 cm. What is the image distance?
An object is placed 20 cm in front of a concave mirror with a focal length of 10 cm. What is the image distance?
- 5 cm
- 10 cm
- 40 cm
- 20 cm (correct)
What phenomenon causes the sky to appear blue?
What phenomenon causes the sky to appear blue?
- Refraction
- Scattering (correct)
- Dispersion
- Reflection
A ray of light is incident on a glass slab at an angle of 60 degrees. If the refractive index of glass is $\sqrt{3}$, what is the angle of refraction?
A ray of light is incident on a glass slab at an angle of 60 degrees. If the refractive index of glass is $\sqrt{3}$, what is the angle of refraction?
Which of the following optical phenomena is primarily responsible for the formation of a rainbow?
Which of the following optical phenomena is primarily responsible for the formation of a rainbow?
What type of lens is used to correct myopia (nearsightedness)?
What type of lens is used to correct myopia (nearsightedness)?
An object is placed at the center of curvature of a concave mirror. Where is the image formed?
An object is placed at the center of curvature of a concave mirror. Where is the image formed?
Which of the following phenomena demonstrates the wave nature of light?
Which of the following phenomena demonstrates the wave nature of light?
The critical angle for a light ray traveling from glass to air is 45 degrees. What is the refractive index of the glass?
The critical angle for a light ray traveling from glass to air is 45 degrees. What is the refractive index of the glass?
A point source of light is placed 50 cm away from a screen. If a lens with a focal length of 10 cm is placed between the source and the screen, at what distance from the source should the lens be placed to form a sharp image on the screen?
A point source of light is placed 50 cm away from a screen. If a lens with a focal length of 10 cm is placed between the source and the screen, at what distance from the source should the lens be placed to form a sharp image on the screen?
Flashcards
What is Ray Optics?
What is Ray Optics?
The study of light's behavior when it interacts with objects much larger than its wavelength, treating light as rays moving in straight lines.
What is Refraction?
What is Refraction?
The phenomenon where light bends as it passes from one medium to another due to a change in speed.
What is Critical Angle?
What is Critical Angle?
The angle of incidence at which light is refracted at an angle of 90 degrees to the normal.
What is Total Internal Reflection?
What is Total Internal Reflection?
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What is Convex Lens?
What is Convex Lens?
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What is Concave Lens?
What is Concave Lens?
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What is Focal Length?
What is Focal Length?
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What is Achromatic Lens?
What is Achromatic Lens?
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What is Lens Aberration?
What is Lens Aberration?
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What is Chromatic Aberration?
What is Chromatic Aberration?
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