A surface for which emissivity is constant at all temperatures and throughout th

Question

A surface for which emissivity is constant at all temperatures and throughout the entire range of wavelength is called

Options:

A . Opaque

B . Grey

C . Specular

D . Diathermanous

Answer: Option B
Answer: (b).Grey

Was this answer helpful ?

Next Question

More Questions on This Topic :

Question 1. If radiant energy EB emitted by the black surface strikes the non-black surface. If non-black surface has absorptivity �....surface has absorptivity α, it will absorb how much radiations?

Question 2. A diathermanous body....

Question 3. If two surfaces are at the same temperature, then the conditions correspond to mobile thermal equilibrium for which the ....for which the resultant interchange of heat is zero are

Question 4. The absorptivity of black body equals to....

Question 5. Choose the false statement....

Question 6. A 100 W light bulb has a tungsten filament (emissivity = 0.30) which is required to operate at 2780 K. If the bulb is co....evacuated, calculate the minimum surface area of the tungsten filament

Question 7. A gray body (E = 0.8) emits the same amount of heat as a black body at 1075 K. Find out the required temperature of the ....K. Find out the required temperature of the gray body

Question 8. For a hemisphere solid angle is measured as....

Question 9. The value of solar constant varies between....

Question 10. The heat energy absorbed by a known area in a fixed time is determined with the help of an instrument called....

Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)

Direction Sense Test Part 1 Reasoning (Hindi)

Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE

Cube & Cuboid Part 1 Reasoning (Hindi)

Data Interpretation (DI) Basic Concept Reasoning (Hindi)

Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)

Sail E0 free webinar Webinars

Real Numbers Part 7 Class 10 Maths

Real Numbers Part 1 Class 10 Maths

Polynomials Part 1 Class 10 Maths

DSP Combined 1 Free Revision Test SAIL JO E-0

GPOE / GPA Combined 1 Free Revision Test SAIL JO E-0

BSP Plant Specific Review Test SAIL JO E-0

BSL Combined 1 Free Revision Test SAIL JO E-0

GFM Combined 1 Free Revision Test SAIL JO E-0