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 is not correct about the Rutherford’s model of an atom? ...
According to kinetic molecular model in gases, ...
Which of the following statements is applicable to a real image formed by a concave mirror? i. it...
The angle between the direction of the earth's magnetic field and the horizontal is called the ...