Home/ Questions/Q 6916
Next
In Process
Lahiri
  • 12
Poll
Asked: 2021-02-07T11:52:44+00:00 In:

A body at a temperature of 728°C and having surface area 5 cm2, radiates 300 J of energy each minute. The emissivity is [Given Boltzmann constant : =5.67×10–8 Wm–2 K–4]

  • 12

Poll Results

12.5%(a) e = 0.18 ( 2 voters )
0%(b) e = 0.02
0%(c) e = 0.2
87.5% (d) e = 0.15 ( 14 voters )
Based On 16 Votes

Participate in Poll, Choose Your Answer.

NCERT Solutions for Class 11 Science Properties of matter 8
Important Board Questions
Thermodynamics
NCERT Books for Session 2022-2023
CBSE Board and UP Board
M.C.Q

2020-2021cbsechapter 8class 11class 11 sciencencertphysicssciencethermodynamics
Share

    1 Answer

    1. (d) e = 0.15

      • 11
    Leave an answer

    Leave an answer

    Browse