Physics, 11.03.2020 02:54 jlchandl

What is the correlation between the length of a light wave and its frequency

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Answer from: ilovecupcakes8459

The wavelength and frequency are inversely proportional to each other.

Explanation:

Wavelength (λ): The distance between the two crusts or two troughs in the wave is known as the wavelength.

Frequency (f): It refers to the repetitions in a certain period of time.

These two are the key characteristics of a wave. These two are related as given below:

$v = \lambda \times f$

$\lambda = \frac{v}{f}$

Here v = speed of the wave.

The wavelength and frequency are inversely proportional to each other.

Answer from: Quest

Electoral current force mechanical advantage if the wheel and axle is 2 n and the output force is 20 n

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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