Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A body, which emits radiations of all possible wavelengths, is known as
Text Solution
Verified by ExpertsThe correct answer is:
D
Step 1: Understand the definition of a black-body. A black-body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence.
Step 2: Since it absorbs all wavelengths, it also emits radiation of all possible wavelengths when it is at a thermal equilibrium. This property makes it a perfect emitter of radiation.
Step 3: Analyze the options:
Step 2: Since it absorbs all wavelengths, it also emits radiation of all possible wavelengths when it is at a thermal equilibrium. This property makes it a perfect emitter of radiation.
Step 3: Analyze the options:
- Good conductor: Refers to materials that conduct heat or electricity well, not related to radiation.
- Partial radiator: Incorrect, as it does not emit radiation of all wavelengths.
- Absorber of photons: While a black-body does absorb photons, the term does not fully capture its nature as a perfect emitter.
- Perfectly black-body: This correctly describes a body that emits radiations of all possible wavelengths.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
On a clear sunny day, an object at temperature T is placed on the top of a high mountain. An identi…
The velocity of heat radiation in vacuum is
In which process, the rate of transfer of heat is maximum
Which of the following is the correct device for the detection of thermal radiation
A thermos flask is polished well
Heat travels through vacuum by