Which term is not associated with sound wave?
Candela
Hertz (Hz) is the unit of frequency, a fundamental property of sound waves. Decibel (dB) is a logarithmic unit expressing the ratio of two values of a power or field quantity, commonly used to measure sound intensity. Mach number is the ratio of the speed of an object to the speed of sound in the surrounding medium, relevant to sonic booms which are sound waves. Candela (cd), however, is the SI unit of luminous intensity, measuring the brightness of light, and is not related to sound waves.
Similar Questions
Which of the following is indicated by the colour of a star?
For which one of the following, 'Diodes' are generally used for?
An anemometer measures which of the following?
If an electron and a photon have the same wavelength, then they will have the same
'Parsec' is the unit measurement of
Atomic explosion is triggered by which kind of reaction?
The phenomenon of change in direction of light when it passes from one medium to another is called
Every hot object emits ______
Ozone protects biosphere from ______
The equation F = k(q1×q2)/r² is representation of:
(Where F is the attractive or repulsive electric force of two point charges q1 and q2 and r is the distance between two charges)
Important Questions from Physics
Ultrasonic sounds are the sounds which have frequencies?
What is the colour of the light emitted by the Sun?
Lightning occur in the sky when two clouds:
With reference to street-lighting, how do sodium lamps differ from LED lamps?
1. Sodium lamps produce light in 360 degrees but it is not so in the case of LED lamps.
2. As street lights, sodium lamps have a longer life span than LED lamps.
3. The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street lighting.
Select the correct answer using the code given below.
Which one of the following is a reason why astronomical distances are measured in light-years?
