Question
The value of Stefan’s constant is

Answer

(a)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The root mean square velocity of the molecules in a sample of helium is $(5/7)^{th}$ that of the molecules in a sample of hydrogen. If the temperature of hydrogen sample is $0°C,$ then the temperature of the helium sample is about
A small steel ball is dropped into a long cylinder containing glycerine. Which one of the following is the correct representation of the velocity time graph for the transit of the ball?
Statement $-1$ : Capacitor can be used in $a.c.$ circuit in place of choke coil.
Statement $-2$ : Capacitor blocks $d.c.$ and allows $a.c.$ only.
The wavelength of $X-$ rays is of the order of
$A$ block of mass $m$ is hung vertically from an elastic thread of force constant $mg/a$. Initially the thread was at its natural length and the block is allowed to fall freely. The kinetic energy of the block when it passes through the equilibrium position will be :
A cricketer catches a ball of mass $150\; gm$ in $0.1$ second moving with speed $20\, m/s$. Then he experiences force of ..... $N$
If a torch is used in place of monochromatic light in Young’s experiment what will happens
A ball is projected upwards from the top of a tower with a velocity of $50\, ms^{-1}$  making an angle of $30^o$ with the horizontal. The height of the tower is $70\, m$. After how  many seconds from the instant of throwing will the ball reach the ground ?.......$s$
Two heater wires of equal length are first connected in series and then in parallel. The ratio of heat produced in the two cases is
In a given figure two masses $m_1$ and $m_2 \,(m_2 > m_1)$ are at rest in equilibrium position. Find the tension in string $AB$