Physics Alternating Current PMC 2021
PMDC Verified Question 86 of 127

The ozone layer in the upper atmosphere protects life on Earth by absorbing and scattering which type of radiation from the sun?
A
Infrared (IR)
B
Alpha radiation
C
Ultraviolet (UV)
D
All of these
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Ultraviolet (UV)
Concept:

The ozone layer acts as a protective shield in the Earth's stratosphere.

Solution:

The ozone layer absorbs a significant portion (97% to 99%) of the high-energy, harmful ultraviolet (UV) radiation emitted by the sun, particularly UV-B and UV-C rays. This protection prevents skin cancer and ecological damage.

Why other options are incorrect:

  • Ozone does not significantly absorb Infrared (heat) radiation or Alpha particles (which are absorbed by the upper atmosphere long before reaching the stratosphere).

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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