Question:
What occurs when EMR passes through an opaque medium ?
What occurs when EMR passes through an opaque medium ?
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Opaque means "blocking light." Since the energy can't travel through (transmission), it gets absorbed and turned into heat!
Updated On: Jun 29, 2026
- Reflection
- Transmission
- Absorption
- Scattering
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Concept
Electromagnetic Radiation (EMR) interacts with matter in three primary ways: Reflection, Absorption, and Transmission.
Step 2: Meaning
An "opaque" medium is a material that does not allow electromagnetic radiation (like visible light) to freely pass through it.
Step 3: Analysis
• Transmission: Occurs in transparent or translucent mediums where EMR passes through.
• Reflection: Occurs at the surface where EMR bounces off.
• Absorption: If EMR enters an opaque medium (is not reflected away at the boundary), its energy is taken in by the material and converted to other forms of energy, like heat.
• Because the medium is opaque, transmission is effectively zero, making absorption the primary internal process.
Step 4: Conclusion
When EMR enters an opaque medium, it cannot be transmitted, so the energy is subjected to absorption. Final Answer: (C)
Electromagnetic Radiation (EMR) interacts with matter in three primary ways: Reflection, Absorption, and Transmission.
Step 2: Meaning
An "opaque" medium is a material that does not allow electromagnetic radiation (like visible light) to freely pass through it.
Step 3: Analysis
• Transmission: Occurs in transparent or translucent mediums where EMR passes through.
• Reflection: Occurs at the surface where EMR bounces off.
• Absorption: If EMR enters an opaque medium (is not reflected away at the boundary), its energy is taken in by the material and converted to other forms of energy, like heat.
• Because the medium is opaque, transmission is effectively zero, making absorption the primary internal process.
Step 4: Conclusion
When EMR enters an opaque medium, it cannot be transmitted, so the energy is subjected to absorption. Final Answer: (C)
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