Question

SE 2015] 30. х2 +33х – 30 = 0
​

Answer 1

Answer:

$\sqrt{2 = 1.414 }$

$\sqrt{3 = 1.732}$

Answer 2

Answer:

Step-by-step explanation:sini/sinr=0.60/0.95  

[sin27=0.95]

therefore, refractive of index of glass =0.63