The spectral energy distribution of star is maximum at twice temperature as that of sun. The total energy radiated by star is
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
- 1Which of the following graphs correctly represents the relation between ln $E$ and ln $T$ where $E$ is the amount of radiation emitted per unit time from unit area of a body and $T$ is the absolute temperatureView Solution
- 2Two spheres of the same material have radii $1\; m$ and $4\; m$ and temperatures $4000 \;K$ and $2000 \;K$ respectively. The ratio of the energy radiated per second by the first sphere to that by the second isView Solution
- 3At $127^o C$ radiates energy is $2.7 \times 10^{-3} J/s$. At ....... $K$ temperature radiated energy is $4.32 \times 10^6 J/s$View Solution
- 4View SolutionWhich factor does not affect convection?
- 5View SolutionWhich of the following statements is wrong
- 6If $\lambda_{ m }$ denotes the wavelength at which the radioactive emission from a black body at a temperature $T \;K$ is maximum, thenView Solution
- 7A body cools from ${60^o}C$ to ${50^o}C$ in $10$ minutes. If the room temperature is ${25^o}C$ and assuming Newton's law of cooling to hold good, the temperature of the body at the end of the next $10$ minutes will be ......... $^oC$View Solution
- 8View SolutionIt is hotter for the same distance over the top of a fire than it is in the side of it, mainly because
- 9The ends $\mathrm{Q}$ and $\mathrm{R}$ of two thin wires, $\mathrm{PQ}$ and $RS$, are soldered (joined) togetker. Initially each of the wires has a length of $1 \mathrm{~m}$ at $10^{\circ} \mathrm{C}$. Now the end $\mathrm{P}$ is maintained at $10^{\circ} \mathrm{C}$, while the end $\mathrm{S}$ is heated and maintained at $400^{\circ} \mathrm{C}$. The system is thermally insulated from its surroundings. If the thermal conductivity of wire $\mathrm{PQ}$ is twice that of the wire $RS$ and the coefficient of linear thermal expansion of $P Q$ is $1.2 \times 10^{-5} \mathrm{~K}^{-1}$, the change in length of the wire $\mathrm{PQ}$ isView Solution
- 10Four rods of same material and having the same cross section and length have been joined, as shown. The temperature of the junction of four rods will be ............... $^{\circ} C$View Solution
