aqa physic a level isa 2014 refraction
1 = n_2 \sin \theta_2 \] Given: \( n_1 = 1.00 \) (air) \( \theta_1 = 30^\circ \) \( n_2 = 1.5 \) Calculate: \[ 1.00 \times \sin 30^\circ = 1.5 \times \sin \theta_2 \] \[ 0.5 = 1.5 \times \sin \theta_2 \] \[ \sin \theta_2 = \frac{0.5}{1.5} = \frac{1}{3} \approx 0.333 \