Question

Emissivity of black body is

A.

0.50

B.

0.25

C.

1.00

D.

0.75

Correct option is C


A black body is a theoretical object that absorbs all incident electromagnetic radiation and emits it efficiently.
• The emissivity of such a body is 1.00, meaning it radiates maximum thermal energy possible for a given temperature.
• Real-world materials have emissivity values less than 1.

Free Tests

Free
Must Attempt

Fundamentals of Food Safety: Definitions, Additives & Contaminants

languageIcon English
  • pdpQsnIcon30 Questions
  • pdpsheetsIcon30 Marks
  • timerIcon27 Mins
languageIcon English
Free
Must Attempt

UPSSSC Cane Supervisor Full Length Mock 01

languageIcon English
  • pdpQsnIcon100 Questions
  • pdpsheetsIcon100 Marks
  • timerIcon120 Mins
languageIcon English
Free
Must Attempt

CUET PG Agribusiness Management (ABM) Full Mock Test : 01

languageIcon English
  • pdpQsnIcon75 Questions
  • pdpsheetsIcon300 Marks
  • timerIcon90 Mins
languageIcon English

Similar Questions

test-prime-package

Access ‘ICAR JRF’ Mock Tests with

  • 60000+ Mocks and Previous Year Papers
  • Unlimited Re-Attempts
  • Personalised Report Card
  • 500% Refund on Final Selection
  • Largest Community
students-icon
354k+ students have already unlocked exclusive benefits with Test Prime!
Our Plans
Monthsup-arrow