Physics
At angle of incidence equal to the critical angle, the angle of refraction is:
- 0°
- 30°
- 90°
- 180°
Related Questions
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?
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.
The critical angle for the glass-air interface is:
- 24°
- 48°
- 42°
- 45°