Question

A ruby red laser has a wavelength of 694 nanaometer Express wavelength 732 of another lasers in standard form in terms of meter

Answer 1

Answer:

732nm = 732 ×10^-9m

= 7.32×10^-7 m

Answer 2

$We \: know \:that ,$

$\boxed { \pink { 1 \: nanometre = 1 \times 10^{-9}\: metres}}$

$i)Here, 732 \: nanometres \\= 732 \times 10^{-9} \: m \\= 732 \times \frac{100}{100} 10^{-9} \: m \\= \frac{732}{100} \times 10^{2} \times 10^{-9} \:m \\= 7.32 \times 10^{2-9} \: m \\= 7.32 \times 10^{-7} \: m$

$\therefore \red{ Standard \:form \: of \: 732 \:nm} \green { = 7.32 \times 10^{-7} \: m}$

and

$ii)Here, 694 \: nanometres \\= 694\times 10^{-9} \: m \\= 694 \times \frac{100}{100} 10^{-9} \: m \\= \frac{694}{100} \times 10^{2} \times 10^{-9} \:m \\= 6.94 \times 10^{2-9} \: m \\= 6.94 \times 10^{-7} \: m$

$\therefore \red{ Standard \:form \: of \: 694 \:nm} \green { = 6.94 \times 10^{-7} \: m}$

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