Exercise ::
Radiation : Processes And Properties
Answer: Option D
Explanation:
This is a very small quantity. The response of the body to incident radiations is, however, completely independent of and unaffected by the simultaneous emission from the body.
See More Information
Tutorial Link:
Published by:
2. A cavity with a small hole will always behave as a?
A. Opaque body B. Black body C. Transparent body D. White body
View Answer
Discuss forum
Workplace
Report
Answer: Option B
Explanation:
No radiation passing in and out will have any effect upon the equilibrium of radiation inside the cavity.
See More Information
Tutorial Link:
Published by:
3. What is the wavelength band of gamma rays?
A. 4 * 10 -7 to 1.4 * 10 -4 micron meter B. 3 * 10 -7 to 3.4 * 10 -4 micron meter C. 2 * 10 -7 to 2.4 * 10 -4 micron meter D. 1 * 10 -7 to 4 * 10 -4 micron meter
View Answer
Discuss forum
Workplace
Report
Answer: Option A
Explanation:
This is the maximum and minimum wavelength for gamma rays.
See More Information
Tutorial Link:
Published by:
4. Transmissivity is defined as?
A. Fraction of total energy transmitted by the body B. Fraction of total energy reflected by the body C. Fraction of total energy absorbed by the body D. Fraction of total energy absorbed and radiated by the body
View Answer
Discuss forum
Workplace
Report
Answer: Option A
Explanation:
It is a fraction of total energy transmitted by the body.
See More Information
Tutorial Link:
Published by:
5. Radiant energy with an intensity of 800 W/m 2 strikes a flat plate normally. The absorptivity is thrice the reflectivity and twice the transmissivity. Determine the rate of transmission?
A. 125.47 W/m 2 B. 135.47 W/m 2 C. 145.47 W/m 2 D. 155.47 W/m 2
View Answer
Discuss forum
Workplace
Report
Answer: Option C
Explanation:
Rate of transmission = T Q 0 = 145.47 W/m2 .
See More Information
Tutorial Link:
Published by:
Read More..
Online Test : Take an Online Radiation : Processes And Properties Aptitude Test Now!