A student is performing an optics experiment using a glass slab. A laser beam is found to travel through the glass at a speed of \(2 \times 10^8\, m/s\). If the speed of light in air is \(3 \times 10^8\, m/s\), what is the refractive index of the glass slab ?
1.5
The refractive index of a medium is given by \(n = \dfrac{c}{v}\), where c is the speed of light in air and v is the speed of light in the medium.
Substituting values: \(n = \dfrac{3 \times 10^8}{2 \times 10^8} = 1.5\).
Therefore, the refractive index of the glass slab is 1.5.
Similar Questions
The nature of image formed by a convex mirror for any object position is :
Important Questions from Refraction and Reflection
Two convex lenses have focal lengths of 50 cm and 25 cm, respectively. If these two lenses are placed in contact, then the net power of this combination will be equal to
The refractive index of crown glass is close to 3/2. If the speed of light in air is c, then the speed of light in the crown glass will be close to
- The twinkling of a star is due to the atmospheric
- What is the magnification produced by a concave lens of focal length 10 cm, when an image is formed at a distance of 5 cm from the lens?
Tyndall effect is a phenomenon of
