A ray of light passes from air to water to glass to air. ...
A ray of light passes from air to water to glass to air. Given that the refractive index for light passing from air to water is \(\frac{4}{3}\) and air to glass is \(\frac{3}{2}\), calculate the refractive index of glass relative to water
0.50
0.67
0.75
1.13
Correct answer is D
\(_{g} \eta _{w} = \frac{ _g \eta _a}{ _a \eta _w}\)
= \(\frac{3}{2} \times \frac{1}{\frac{4}{3}}\)
= \(\frac{3}{2} \times \frac{3}{4}\)
= \(\frac{9}{8}\)
= 1.125
= 1.13 (to 2 d.p)
Which of the following methods CANNOT be used to produce a steel magnet? The ...
Metals are good conductors of electricity because ...
Which of the following statements is true? The frequency of a vibrating string is ...
lf Einstein’s photoelectric equation is represented by hf - W = Φ where h is Planck’s constant,...
In which of the following media does sound travel faster? ...