If the absolute temperature of an object is doubled, the thermal power radiated per unit surface area of this object will (assuming that its emissivity is not affected by the temperature change)
A) increase by a factor of 2.
B) increase by a factor of 4.
C) increase by a factor of 8.
D) increase by a factor of 16.
E) increase by a factor of 32.
D
You might also like to view...
The area of a loop of wire is reduced by a factor of 2 while the rate of change of magnetic field applied is doubled. What happens to the induced emf in that loop of wire?
A) It is doubled. B) It is reduced by a factor of 2. C) It is reduced by a factor of 4. D) It is quadrupled. E) It stays the same.
The two forms of electromagnetic radiation that penetrate the atmosphere best are
A) X-rays and gamma rays. B) ultraviolet and visible light. C) visible and infrared light. D) visible and radio waves. E) infrared and microwaves.
Inductors cannot store energy because they cannot store charge
A) True B) False
The orbital quantum number can have any integer value ranging from
A) 0 to n. B) 0 to (n - 1). C) 1 to n. D) 1 to (n + 1). E) 1 to (n - 1).