The sun radiates electromagnetic energy at the rate of $3.9 \times 10^{26}\,W$. It's radius is $6.96 \times 10^8\,m$. The intensity of sun light at the solar surface will be (in $W/m^2$)
Medium
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
- 1View SolutionOn a cold morning, a metal surface will feel colder to touch than a wooden surface because
- 2The original temperature of a black body is ${727^o}C.$The temperature at which this black body must be raised so as to double the total radiant energy, is ....... $K$View Solution
- 3Six wire each of cross-sectional area $A$ and length $l$ are combined as shown in the figure. The thermal conductivities of copper and iron are $K_1$ and $K_2$ respectively. The equivalent thermal resistance between points $A$ and $C$ is :-View Solution
- 4The distribution of relative intensity $I (\lambda)$ of blackbody radiation from a solid object versus the wavelength $\lambda$ is shown in the figure. If the Wien displacement law onstant is $2.9 × 10^{-3}\ mK$, what is the approximate temperature of the object ....... $K$View Solution
- 5A tungsten body of diameter $2.3\, cm$ is at $2000\,^oC$. It radiates $30\%$ of the energy radiated by a black body of same radius and temperature. Find radius of black body which will radiate energy at same rate at the same temperature......... $cm$View Solution
- 6The ratio of thermal conductivity of two rods of different material is $5 : 4$ . The two rods of same area of cross-section and same thermal resistance will have the lengths in the ratioView Solution
- 7View SolutionThe energy supply being cut-off, an electric heater element cools down to the temperature of its surroundings, but it will not cool further because
- 8Wein's constant is $2892 \times {10^{ - 6}}$$MKS$ unit and the value of ${\lambda _m}$ from moon is $14.46$ microns. What is the surface temperature of moon ...... $K$View Solution
- 9View SolutionIn which of the following process, convection does not take place primarily
- 10View SolutionWhich of the following cylindrical rods will conduct most heat, when their ends are maintained at the same steady temperature