“Radiation cannot be affected through vacuum or space devoid of any matter”.

Question

“Radiation cannot be affected through vacuum or space devoid of any matter”. True or false

Options:

A . True

B . False

C . May be

D . Can't say

Answer: Option B
Answer: (b).False

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Question 1. The rate of heat conduction through a cylindrical tube is usually expressed as....

Question 2. Typical examples of heat conduction through cylindrical tubes are not found in....

Question 3. A composite slab has two layers having thermal conductivities in the ratio of 1:2. If thickness is same for each layer t....then the equivalent thermal conductivity of the slab would be

Question 4. A composite wall of a furnace has two layers of equal thickness having thermal conductivities in the ratio 2:3. What is ....is the ratio of temperature drop across the two layers?

Question 5. Logarithmic mean area of the cylindrical tube is given as....

Question 6. The annealing furnace for continuous bar stock is open at the ends and has interior dimensions of 0.6 m * 0.6 m * 1.5 m ....thick all around. Calculate the shape factor for the furnace?

Question 7. The shape factor for complete rectangular furnace is Where a, b and c are the inside dimensions and d x is the wall thic....the inside dimensions and d x is the wall thickness

Question 8. Which is true regarding a complete rectangular furnace?....

Question 9. Shape factor for sphere is....

Question 10. For the same material and same temperature difference, the heat flow in terms of shape factor is given by....

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