GK
PHYSICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
hertz
|
|
|
meter
|
|
|
meter per second
|
|
|
second
|
Detailed explanation-1: -The SI unit of wavelength is metre usually denoted as m. While measuring wavelength the multiples or fractions of a metre is also used. Notably, exponential powers of 10 are used when wavelengths are of a large property. When there are shorter wavelengths they are expressed as negative exponential.
Detailed explanation-2: -Formula: = C/f. Where, (Lambda) = Wavelength in meters. c = Speed of Light (299, 792, 458 m/s)
Detailed explanation-3: -Wavelength is expressed in meters in the SI system. Frequency: The frequency, f, of an EM wave refers to the number of times the wave cycles in one second. The SI unit of frequency is Hertz.
Detailed explanation-4: -Answer: (a) Wavelength-Wavelength can be defined as the distance between two consecutive rarefactions or two consecutive compressions. The SI unit of wavelength is the meter (m).
Detailed explanation-5: -NOTE: Wavelengths of visible light are measured in nanometers (nm). A nanometer is a unit of length equal to one billionth of a meter.