A hole of area 1 cm2 is opened on the surface of a large spherical cavity whose

Sail E0 Webinar

Question

A hole of area 1 cm2 is opened on the surface of a large spherical cavity whose inside temperature is maintained at 727 oC. The value of Stefan-Boltzmann constant is 5.67 * 10-8 W/m2 - K4. Assuming black body radiation, the rate at which the energy is emitted (in W) by the cavity through the hole, up to 3 digits after the decimal point, is ________

Options:

A . 4.7 to 4.9

B . 5.6 to 5.8

C . 7.3 to 7.5

D . 1.2 to 1.4

Answer: Option B

-NA-

Was this answer helpful ?

Next Question

Submit Solution

More Questions on This Topic :

Question 1. A wet solid is dried over a long period of time by unsaturated air of nonzero constant relative humidity. The moisture ....content eventually attained by the solid is termed as the

Question 2. The packing of an existing absorption tower is replaced with a new type of packing. The height of the packing and the i....packing, when compared to that with the old packing, will

Question 3. A binary liquid mixture is in equilibrium with its vapor at a temperature T = 300 K. The liquid mole fraction x1 of spe....up to 2 digits after the decimal point, is ________

Question 4. In the elutriation leg of a commercial crystallizer containing a mixture of coarse and very fine crystals of the same m....than the terminal velocity of the coarse crystals only. Hence

Question 5. Calculate the heat required (in kJ, up to 1 digit after the decimal point) to raise the temperature of 1 mole of a soli....where T is in K. Assume no phase change. _________

Question 6. 100 ton/h of a rock feed, of which 80% passed through a mesh size of 2.54 mm, were reduced in size such that 80% of the....to the nearest integer) using Bond's law, is _____________

Question 7. Consider the following set of linear algebraic equations x1 + 2x2 + 3x3 = 2 x2 + x3 = - 1 2x2 + 2x3 = 0The system ha....x3 = - 1 2x2 + 2x3 = 0The system has

Question 8. A box containing 10 identical compartments has 6 red balls and 2 blue balls. If each compartment can hold only one ball....one ball, then the number of different possible arrangements are

Question 9. If a and b are arbitrary constants, then the solution to the ordinary differential equation d2y/dx2 - 4y = 0 is ....

Question 10. For the function f(t) = e-t/T, the Taylor series approximation for t ....

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

GPOE / GPA Combined 1 Free Mock Test SAIL JO E-0 2024

Chapter 3.1 : INTRODUCTION Chapter 3 : Sinter Plant SAIL E0 - GPOE/GPA 2024

Chapter 2.3 : COAL HANDLING PLANT - Set 1 Chapter 2 : Coke Ovens and Coal Chemicals SAIL E0 - GPOE/GPA 2024

Chapter 1.1 : INTRODUCTION Chapter 1 : Raw Material Handling Plant SAIL E0 - GPOE/GPA 2024

DSP Combined 1 Free Revision Test SAIL JO E-0