Question

Dichromate ions posses their maximum absorbance at 450 nm which is orange in color. But upon dilution, maximum absorbance occurs at 410 nm. Why??​

Answer 1

Answer:

Let the third side be x

Then,

Length of first side = (x+5)cm

Length of second side = (x+7)cm

Length of third side = x cm

Perimeter = 21cm

\huge{\sf{Solution:-}}Solution:−

Perimeter of triangle = Sum of their sides

\longrightarrow⟶ \sf{(x+5+x+7+x)cm= 21cm}(x+5+x+7+x)cm=21cm

\longrightarrow⟶ \sf{(3x+12)cm = 21cm}(3x+12)cm=21cm

\longrightarrow⟶ \sf{3x=(21-12)cm}3x=(21−12)cm

\longrightarrow⟶ \sf{3x=9}3x=9

\longrightarrow⟶ \sf{x= \frac{9}{3}}x=39

\longrightarrow⟶ \sf{x=3}x=3

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\sf{\red{Therefore,the\: sides\:are:-}}