Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET 2007
Exam
NEET
Year
2007
Subject
Physics
Chapter
Thermal Properties of Matter

NEET 2007 · Physics · Thermal Properties of Matter

A black body is at 727^ C . It emits energy at a rate which is...

A black body is at 727∘C727^{\circ} \mathrm{C}. It emits energy at a rate which is proportional to:

Options

  1. A(1000)4(1000)^4
  2. B(1000)2(1000)^2
  3. C(727)4(727)^4
  4. D(727)2(727)^2

Correct answer

B. (1000)2(1000)^2

Step-by-step solution

According to Stefan's law Rate of radiated energy E∝T4E \propto T^4 where T=T= absolute temperature of a black body ∴E∝(727+273)4 or E∝[1000]4\therefore E \propto(727+273)^4 \text{ or } E \propto[1000]^4
Practice Thermal Properties of Matter on Quantrex Academy →

More from Thermal Properties of Matter

A cylindrical rod with one end in a steam chamber and the other end in ice results in… MHT CET Medical 2026A spherical blackbody of radius 10\ m is maintained at a temperature T , radiating power… MHT CET Medical 2026The rectangular surface area (12\ cm×6\ cm) of the black body, at a temperature 127^ ^ ∘… MHT CET Medical 2026A metal sphere cools at a rate of 2^ ^ ∘ C/min when the temperature is 80^ ^ ∘ C . If the… MHT CET Medical 2026A resistance thermometer has resistance 95\ Ω at the ice point and 140\ Ω at the steam… MHT CET Medical 2026A metal sphere cools from 80^ ^ ∘ C to 60^ ^ ∘ C in 10 minute. The time taken (in minute)… MHT CET Medical 2026If the temperature of 5 kg mass of a material of a specific heat capacity 200 J/kg ^ ^ ∘… MHT CET Medical 2026The initial temperature of a body is 80^ ^ ∘ C . If its temperature falls to 64^ ^ ∘ C in… MHT CET Medical 2026 Full Thermal Properties of Matter list All NEET PYQs