Question Number 35876 by NECx last updated on 25/May/18
$${please}\:{help} \\ $$$$ \\ $$$${why}\:{is}\:{it}\:{not}\:{advisable}\:{to}\:{use}\:{a} \\ $$$${small}\:{angle}\:{of}\:{incidence}\:{when} \\ $$$${performing}\:{experiment}\:{on}\:{refraction} \\ $$$${in}\:{a}\:{rectangular}\:{prism}???? \\ $$
Commented by tanmay.chaudhury50@gmail.com last updated on 26/May/18
$${in}\:{search}\:{of}\:{true}\:{answer} \\ $$
Commented by ajfour last updated on 26/May/18
$${lest}\:{it}\:{does}\:{not}\:{undergo}\:{total} \\ $$$${internal}\:{reflection}.. \\ $$
Commented by tanmay.chaudhury50@gmail.com last updated on 27/May/18
$${yes}\:{you}\:{are}\:{right}... \\ $$$${let}\:{say}\:{mathematically} \\ $$$$\frac{{lim}}{{i}\rightarrow\left({i}_{\theta} \right)_{{c}} }\:\:{then}\:{refraction}\rightarrow{Total}\:{internal} \\ $$$${reflection}\:\:\left({i}_{\theta} \right)_{{c}} ={critical}\:{angle} \\ $$$${when} \\ $$$${i}\rightarrow\left({i}_{\theta} \right)_{{c}} \:\:\:{then}\:{refraction}\rightarrow{Total}\:{internal} \\ $$$${reflection} \\ $$$${the}\:{very}\:{pupose}\:{to}\:{check}\:{the}\:{refraction}\: \\ $$$${property}\:{of}\:{light}\:{can}\:{not}\:{be}\:{experimented} \\ $$$${as}\:{most}\:{of}\:{light}\:{energy}\:{gets}\:{reflected}\:{in}\: \\ $$$${second}\:{medium}\:{minimum}\:{energy}\:{perform} \\ $$$${refraction}. \\ $$$$ \\ $$