NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Thermal Properties of Matter
NEET · Physics · Thermal Properties of Matter
Match the following. ( Column-I Column-II (A) e = ∫_0^ λ e_λ dλ (a)...
Match the following.
(
)
| Column-I | Column-II | ||
| (A) | e = \int_0^{\lambda} e_\lambda d\lambda | (a) | \sigma T^a |
| (B) | \lambda_m T = b | (p) | Wien's displacement law |
| (C) | a_2 | (n) | Unity for black body |
| (D) | \frac{e}{a} for black body | (s) | Absorptive power |
Options
- Aa-p b-r c-s d-q
- Ba-p b-s c-r d-q
- Ca-q b-r c-s d-p
- Da-q b-p c-s d-r
Correct answer
D. a-q b-p c-s d-r
Step-by-step solution
Rate of heat emitted is given by emissivity (\times \sigma \times) (Temperature) Where sigma is stephan boltzmann constant. Wavelength (\times) Temperature= constant it is given by wien's displacement law. ' a ' is given as absorptive power of the material.
By Kirrchoff's law, absorptive power = emissivity power (a=e)