Colour of shining bright star is an indication of its
AIIMS 2001, Easy
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
- 1Find Temperature difference between $B$ and $C$ ? (All rods are identical)View Solution
- 2A body takes $4\, {min}$. to cool from $61^{\circ} {C}$ to $59^{\circ} {C}$. If the temperature of the surroundings is $30^{\circ} {C}$, the time taken by the body to cool from $51^{\circ} {C}$ to $49^{\circ} {C}$ is $....\,min$View Solution
- 3If the temperature of a hot body is increased by $50\%$ then the increase in the quantity of emitted heat radiation will be ..... $\%$View Solution
- 4View SolutionVariation of radiant energy emitted by sun, filament of tungsten lamp and welding arc as a function of its wavelength is shown in figure. Which of the following option is the correct match?
- 5A constant potential difference is applied to the ends of a graphite rod, whose resistance decreases with a rise of temperature. The rod can be $(1)$ covered with asbestos or $(2)$ left open to atmosphere. Answer for steady state.View Solution
- 6A solid cube and a solid sphere of the same material have equal surface area. Both are at the same temperature ${120^o}C$, thenView Solution
- 7Rate of cooling at $600K$ , if surrounding temperature is $300K$ is $R$ . The rate of cooling at $900K$ isView Solution
- 8A body cools from $60\,^oC$ to $50\,^oC$ in $10\,minutes$ . If the room temperature is $25\,^oC$ 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
- 9The thickness of a metallic plate is $0.4 cm$ . The temperature between its two surfaces is ${20^o}C$. The quantity of heat flowing per second is $50$ calories from $5c{m^2}$ area. In $CGS$ system, the coefficient of thermal conductivity will beView Solution
- 10A black body at a temperature of ${227^o}C$ radiates heat energy at the rate of $5 cal/cm^2-sec$. At a temperature of ${727^o}C$, the rate of heat radiated per unit area in $cal/cm^2$ will beView Solution