- AMean, Median, and Mode
- BRange, Standard Deviation, and Variance
- CMean and Median
- DRange and Median
Time Taken:
Correct Answer:
Wrong Answer:
Percentage: %
Answer: d) Frequency
Explanation: The speed of sound in air is affected by temperature, humidity, and pressure, but it is not affected by the frequency of the sound wave.
Answer: b) 2
Explanation: A standing wave that is fixed at both ends can have a maximum of two nodes. One node will be located at the center of the wave, and the other node will be located at one end of the wave.
Answer: a) Hertz
Explanation: The frequency of light is measured in hertz (Hz), which is a unit of measurement for cycles per second.
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.
Answer: a) Red
Explanation: Red light has the longest wavelength of visible light, while violet light has the shortest.
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.
Answer: d) Yellow
Explanation: The primary colors of light are red, green, and blue. Yellow is a secondary color that is produced by combining red and green light.