Related Questions

Depending on the radiating properties, a body will be opaque when
A p = 0, x = 0 and a = 1
B p = 1, x = 0 and a = 0
C p = 0, x = 1 and a = 0
D x = 0, a + p = 1
The ratio of total radiating power to the absorptivity of the body depends upon the __________ as per Kirchoffs law.
A Wavelength of radiation
B Nature of the body
C Temperature of the body
D None of these
As per Kirchoffs law, the ratio of the total radiating power to the absorptivity of a body depends on the
A Temperature of the body only
B Wavelength of monochromatic radiation
C Both A and B
D Nature of material of body
Solid angle subtended by the finite surface at the radiating element is
A Called the view factor
B Called the angle of vision
C Proportional to the square of the distance between surfaces
D Expressed in terms of radians
পৃথিবী পৃষ্ঠে একটি ইটের ওজন 81 N. পৃথিবীর অর্ধেক বাসার্ধের সমান উচ্চতায় এবং অর্ধেক বাসার্ধের সমান গভীরতায় ইউটির উপরে পৃথিবীর অভিকর্ষ বলের মান কত হবে?(A brick weighs 81 N on the surface of the earth. What are the earth's gravitational forces act on it at a height of half of the radius of the earth and at a depth of half of the radius of earth, respectively?)
A 36 N and 81 N
B 36 N and 40.5 N
C 36 N and 20.25 N
D 98 and 40.5 N
E 81 N and 81 N
...............many critics. Mark Twain's novel 'Huckleberry Finn' is his greatest work and is one of the greatest American novels ever written.
A Of
B According to
C Among
D Between
'Greatest happinecss for the greatest number'-কোন তত্ত্বের মূল কথা
A উপযোগবাদ
B উদারতাবাদ
C ব্যক্তিস্বাতন্ত্র্যবাদ
D ফ্যাসিবাদ
'Greatest happiness for the greatest number' কোন তত্ত্বের মূল কথা?
A উপযোগবাদ
B উদারতাবাদ
C ব্যক্তিস্বাতন্ত্র্যবাদ
D ফ্যাসিবাদ
"Greatest happiness of the greatest number" কোন তত্ত্বের মূল কথা?
A উপযোগবাদ
B উদারতাবাদ
C ব্যক্তিস্বাতন্ত্রবাদ
D ফ্যাসিবাদ
The popular notion that a tree's age can be determined by counting number of internal rings in its trunk is generally true. Howeevr, to help regulate the internal temperature of the tree, the outermost layers of wood of the Brazilian ash often →peel away when the temperature exceeds 95 degrees Fahrenheit, leaving the tree with fewer rings than it would otherwise have. So only if the temperature in the Brazilian ash's environment never exceeds 95 degrees Fahrenheit →elav eing the tree with fewer rings than it would otherwise have. So only if the reliable measure of the tree's age. Which of the following is an assumption on whish the argument above depends?
A The growth of new rings in a trees is not a function of levels of precipitation.
B Only the Brazilaian ash loses rings because of excessive heat.
C One day of temperatures above 95 degrees Fahrenheit will cause the Brazilian ash to lose one ring.
D The internal rings of all tress are of uniform thickness

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