Viewed near normally from air, a pool bottom appears
AAt its unchanged real position
BBeyond the pool's far side
CDeeper than its real position
DRaised above its real position
Answer & Solution
Correct answer: D. Raised above its real position
Refraction at the water-air boundary makes the apparent depth smaller than the real depth.
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