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An indirectly heated filament is radiati...

An indirectly heated filament is radiating maximum energy of wavelength `2.16xx10^-5cm`. Find the net amount of heat energy lost per second per unit area, the temperature of the surrounding air is `13^@C`. Given `b=0.288cm-K.sigma=5.77xx10^-5erg//s-cm^(2)-K^(4)`).

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To solve the problem, we will follow these steps: ### Step 1: Convert the surrounding temperature to Kelvin The temperature of the surrounding air is given as \( 13^\circ C \). To convert this to Kelvin, we use the formula: \[ T_2 = 13 + 273 = 286 \, K \] ...
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CENGAGE PHYSICS ENGLISH-CALORIMETRY-Exercise 1.3
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  3. A ‘thermacole’ icebox is a cheap and efficient method for storing smal...

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  4. A brass boiler has a base area of 0.15 "m"^(2) and thickness is 1.0 "c...

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  5. An electric heater is placed inside a room of total wall area 137 m^2...

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  6. An indirectly heated filament is radiating maximum energy of wavelengt...

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  7. A uniform copper bar 100 cm long is insulated on side, and has its end...

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  8. Two rods A and B of same length and cross-sectional area are connected...

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  9. Two conductors A and B are connected in parallel as shown in Fig. i....

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  10. A sphere, a cube and a thin circular pate are heated to the same tempe...

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  11. One end of a brass rod of length 2.0 m and cross section 1cm^2 is kept...

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  12. Three rods AB, BC and BD having thermal conductivities in the ratio 1:...

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  13. Thermal conductivity of inner core of radius r is K and of the outer o...

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  14. A cylinder of radius R and length l is made up of substance whose ther...

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  15. A cube and a sphere of equal edge and radius, made of the same substan...

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  16. A spherical ball of radius 1cm coated with a metal having emissivity 0...

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  17. A body emits maximum energy at 4253 Å and the same body at some other ...

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  18. A black body at 1500K emits maximum energy of wavlength 20000Å. If sun...

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