alleryThe stratospheric ozone layer blocks much harmful
ARadio radiation
BInfrared radiation
CMicrowave radiation
DUltraviolet radiation
Answer & Solution
Correct answer: D. Ultraviolet radiation
Ozone absorbs much of the Sun's damaging ultraviolet radiation before it reaches Earth's surface.
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