Question

$\Huge\red\nabla\blue\nabla\green\nabla\orange\nabla\purple\nabla\pink\nabla\nabla\\\\ \\ \sf\red{The \: wavelength \: of \: a \: blue} \\ \sf\red{ light \: is \: 500nm.} \\ \sf \red{Calculate its frequency.}\\\\ \\ \Huge\red\square\blue\square\green\square\orange\square\purple\square\pink\square$
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Answer 1

$\\ \\ \\ \sf{\underline{\underline{ \purple{ \huge{Given:}}}}}$

✰ Wavelength = 500 nm

$\\ \\ \\ \sf{\underline{\underline{ \purple{ \huge{To \: Find:}}}}}$

✠ It's Frequency.

$\\ \\ \\ \sf{\underline{\underline{ \purple{ \huge{Solution:}}}}}$

To calculate frequency, we will use formula to be used:

$\sf{ f = \dfrac{c}{ \lambda} }$

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Where,

• f is the frequency of the wave. It is expressed in the units of Hertz.
• c is the speed of wave in a particular medium. It is expressed in the units of of m/s.
• $\lambda$ is the wavelength of a blue light. It is expressed in terms of nanometres but we will convert it into metres. [ 1 nanometre (nm) = $\sf {10}^{ - 9}$ m

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As, we know the speed of wave is c = $\sf3 \times {10}^{8}$

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Substituting the values in the formula,

$: \implies \sf f = \dfrac{3 \times {10}^{8} }{500 \times {10}^{ - 9} }$

$\\ : \implies \sf f = \dfrac{1}{0.006 \times {10}^{ - 17} }$

$\\ : \implies \sf {f = 0.006 \times {10}^{ 17} }$

$\\ : \implies \sf {\blue{ f = 6 \times {10}^{ 14} \: Hz}}$

∴ The frequency of wave $\bm {\blue{ = 6 \times {10}^{ 14} \: Hz}}$

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Answer 2

Answer:

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u have to hadle it for 5 days

can u ?

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