alleryThe critical angle is a property of which combination?
AThe source's shape and size
BSource brightness and distance
CRay thickness and brightness
DThe two media at the boundary
Answer & Solution
Correct answer: D. The two media at the boundary
A critical angle is defined for the refractive-index relationship of the two media forming an interface.
Keep practising Ray Optics and Optical Instruments
Browse all Ray Optics and Optical Instruments questions for ICSE Class 10, or explore more Physics topics.
Related questions
Prism A=60°, incidence 40°, deviation 30°. Reverse the path. New incidence?Normal entry: 30° prism in air, n=1.5. Given sin^-1(0.75)=48.6°. Deviation?In vacuum, infrared λ=1 μm and UV λ=0.25 μm. Which frequency is greater?Vacuum radiation f=10^15 Hz; c=3×10^8 m/s. Which wavelength and band fit?Light: air λ=600 nm, c=3×10^8; glass speed=2×10^8 m/s, frequency unchanged. Glass λ?A water-air ray is 35° to the surface. Critical angle=48°. What follows?Glass n=1.5, sin i=0.8. Outside is air n=1 or water n=4/3. TIR occurs withNormal entry into a 30° prism in air, n=1.5. At its next face, sin emergence is