- A 299,792,458 m/s
- B 186,000 km/s
- C 300,000 m/s
- D299,792 km/s
Light - Quiz
- ARed
- BGreen
- CBlue
- DYellow
- AHertz
- BJoule
- CWatt
- DDecibel
- AThe speed of light is constant in all media.
- BThe speed of light is greater in a vacuum than in a medium.
- CThe speed of light is lower in a vacuum than in a medium.
- DThe speed of light is higher in a medium than in a vacuum.
- A Red
- BGreen
- CBlue
- DYellow
- AConvex lens
- BConcave lens
- CPlano-convex lens
- DBiconcave lens
- AReflection
- BAbsorption
- CRefraction
- DEmission
- ARadio waves
- BMicrowaves
- CX-rays
- D Gamma rays
- AInterference
- BDiffraction
- CPolarization
- DDispersion
- A An opaque object reflects all colors of light equally.
- B An opaque object absorbs all colors of light equally.
- CAn opaque object transmits all colors of light equally.
- DAn opaque object refracts all colors of light equally.
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Quiz Analytics
Light - Quiz
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Time Taken: Questions: Answered: Not Answered:
Correct Answer:
Wrong Answer:
Percentage: %
- A. 299,792,458 m/s
- B. 186,000 km/s
- C. 300,000 m/s
- D. 299,792 km/s
Remarks:
Explanation:
Answer: a) 299,792,458 m/s
Explanation: The speed of light in a vacuum is a fundamental constant of nature and is approximately 299,792,458 meters per second.
- A. Red
- B. Green
- C. Blue
- D. Yellow
Remarks:
Explanation:
Answer: c) Blue
Explanation: The wavelength of blue light is shorter than the wavelengths of red, green, and yellow light. Blue light has a wavelength of approximately 400-500 nanometers, while red light has a wavelength of approximately 620-750 nanometers.
- A. Hertz
- B. Joule
- C. Watt
- D. Decibel
Remarks:
Explanation:
Answer: a) Hertz
Explanation: The frequency of light is measured in hertz (Hz), which is a unit of measurement for cycles per second.
- A. The speed of light is constant in all media.
- B. The speed of light is greater in a vacuum than in a medium.
- C. The speed of light is lower in a vacuum than in a medium.
- D. The speed of light is higher in a medium than in a vacuum.
Remarks:
Explanation:
Answer: a) The speed of light is constant in all media.
Explanation: The speed of light is a fundamental constant of nature and is always the same in a vacuum, air, water, glass, or any other medium.
- A. Red
- B. Green
- C. Blue
- D. Yellow
Remarks:
Explanation:
Answer: a) Red
Explanation: Red light has the longest wavelength of visible light, while violet light has the shortest.
- A. Convex lens
- B. Concave lens
- C. Plano-convex lens
- D. Biconcave lens
Remarks:
Explanation:
Answer: b) Concave lens
Explanation: A concave lens is thinner at the center and thicker at the edges, which causes light rays to diverge. This helps to correct the focus of the eye in people who are nearsighted.
- A. Reflection
- B. Absorption
- C. Refraction
- D. Emission
Remarks:
Explanation:
Answer: d) Emission
Explanation: Emission is the process by which light is produced by an atom when an electron moves from a higher energy level to a lower energy level and releases energy in the form of a photon.
- A. Radio waves
- B. Microwaves
- C. X-rays
- D. Gamma rays
Remarks:
Explanation:
Answer: d) Gamma rays
Explanation: Gamma rays have the highest energy and the shortest wavelength of all forms of electromagnetic radiation.
- A. Interference
- B. Diffraction
- C. Polarization
- D. Dispersion
Remarks:
Explanation:
Answer: a) Interference
Explanation: Interference is the phenomenon by which light waves combine to create areas of constructive interference, where the waves reinforce each other, and areas of destructive interference, where the waves cancel each other out.
- A. An opaque object reflects all colors of light equally.
- B. An opaque object absorbs all colors of light equally.
- C. An opaque object transmits all colors of light equally.
- D. An opaque object refracts all colors of light equally.
Remarks:
Explanation:
Answer: b) An opaque object absorbs all colors of light equally.
Explanation: An opaque object does not allow any light to pass through it, so it cannot reflect or transmit light. Instead, the object absorbs all of the colors of light that fall on it, which is why we perceive the object as having a particular color based on the wavelengths of light that it absorbs and reflects.