Units for constants in Column $-\,I$ and $SI$ unit is given in Column $-\,II$ . Match the followings :
| Column $-\,I$ | Column $-\,II$ |
| $(a)$ Wein's constant | $(i)$ $Wm^{-2}\,K^{-4}$ |
| $(b)$ Stefan-Boltzmaan's constant. | $(ii)$ $Wm^{-1}\,K^{4}$ |
| $(iii)$ $mK$ |
Easy
Download our app for free and get started
$(a-i i i),(b-i)$
Download our appand get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
Similar Questions
- 1A room is maintained at ${20^o}C$ by a heater of resistance $20$ ohm connected to $200$ volt mains. The temperature is uniform through out the room and heat is transmitted through a glass window of area $1{m^2}$ and thickness $0.2$ cm. What will be the temperature outside ....... $^oC$ ? Given that thermal conductivity $K=0.2$ for glass is and $J = 4.2 J/cal$View Solution
- 2Three very large plates of same area are kept parallel and close to each other. They are considered as ideal black surfaces and have very high thermal conductivity. The first and third plates are maintained at temperatures $2T$ and $3T$ respectively. The temperature of the middle (i.e. second) plate under steady state condition isView Solution
- 3In $5\, minutes,$ a body cools from $75^{\circ} {C}$ to $65^{\circ} {C}$ at room temperature of $25^{\circ} {C}$. The temperature of body at the end of next $5\, minutes$ is $......\,{ }^{\circ} {C} .$View Solution
- 4Radius of a conductor increases uniformly from left end to right end as shown in fig.Material of the conductor is isotropic and its curved surface is thermally isolated from surrounding. Its ends are maintained at temperatures $T_1$ and $T_2$ ($T_1$ > $T_2$): If, in steady state, heat flow rate is equal to $H$ , then which of the following graphs is correctView Solution
- 5The total energy of a black body radiation source is collected for five minutes and used to heat water. The temperature of the water increases from $10.0^{\circ} C$ to $11.0^{\circ} C$. The absolute temperature of the black body is doubled and its surface area halved and the experiment repeated for the same time. Which of the following statements would be most nearly correct?View Solution
- 6View SolutionNewton’s law of cooling, holds good only if the temperature difference between the body and the surroundings is
- 7View SolutionCan we boil water inside the earth satellite by convection
- 8Two rods (one semi-circular and other straight) of same material and of same cross-sectional area are joined as shown in the figure. The points $A$ and $B$ are maintained at different temperature. The ratio of the heat transferred through a cross-section of a semi-circular rod to the heat transferred through a cross section of the straight rod in a given time isView Solution
- 9View SolutionIn which case the thermal conductivity increases from left to right
- 10A black body is at a temperature $300 K$ . It emits energy at a rate, which is proportional toView Solution