SATHEE: Heat and Thermodynamics 3 Question 10

Heat and Thermodynamics 3 Question 10

10. Variation 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?

$(2005, 2 M)$

(a) Sun- $T_{1}$ , tungsten filament- $T_{2}$ , welding arc- $T_{3}$

(b) Sun- $T_{2}$ , tungsten filament $- T_{1}$ , welding arc- $T_{3}$

(c) Sun- $T_{3}$ , tungsten filament- $T_{2}$ , welding arc- $T_{1}$

(d) Sun- $T_{1}$ , tungsten filament- $T_{3}$ , welding arc- $T_{2}$

Show Answer

Solution:

$λ_{m} T =$ constant

From the graph $T_{3} > T_{2} > T_{1}$

Temperature of Sun will be maximum.

Therefore, (c) is the correct option.

NOTE Although graphs are not very clear.

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Heat and Thermodynamics 3 Question 10

10. Variation 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?

Solution:

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