Question 149: Waves Optics

Question

In an interference experiment the ratio of amplitudes of coherent waves is $${{{a_1}} \over {{a_2}}} = {1 \over 3}$$ . The
ratio of maximum and minimum intensities of
fringes will be :

Accepted Answer

$${{{I_{\max }}} \over {{I_{\min }}}} = {{{{\left( {{a_1} + {a_2}} \right)}^2}} \over {{{\left( {{a_1} - {a_2}} \right)}^2}}} = {{{{\left( {1 + 3} \right)}^2}} \over {{{\left( {1 - 3} \right)}^2}}} = {{16} \over 4}$$ = 4

Answer

2

Answer

4

Answer

18

Answer

9

Waves Optics

In an interference experiment the ratio of amplitudes of coherent waves is ${{{a_1}} \over {{a_2}}} = {1 \over 3}$ . The ratio of maximum and minimum intensities of fringes will be :

Choose the correct answer: