Physics
A postage stamp kept below a rectangular glass slab of refractive index 1.5 when viewed from vertically above it, appears to be raised by 7.0 mm. Calculate the thickness of the glass slab.
Related Questions
A water pond appears to be 3 m deep. If the refractive index of water is 4/3, find the actual depth of the pond.
A coin is placed at the bottom of a beaker containing water (refractive index = 4/3) at a depth of 16 cm. By what height the coin appears to be raised when seen from vertically above?
At angle of incidence equal to the critical angle, the angle of refraction is:
- 0°
- 30°
- 90°
- 180°
The condition required for total internal reflection to take place is:
- light ray passes from a rarer to denser medium
- light ray passes from a denser to rarer medium
- angle of incidence is less than critical angle
- none of the above