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5 Match the temperature of a black body given in List - I with an appropriate statement in List - II, and choose the correct option. [Given: Wien’s constant as 2.9 × 10 −3 m - K and e hc = 1.24 × 10 −6 V - m] List - I List - II ( P ) 2000 K ( 1 ) The radiation at peak wavelength can lead to emission of photoelectrons from a metal of work function 4 eV. ( Q ) 3000 K ( 2 ) The radiation at peak wavelength is visible to human eye. ( R ) 5000 K ( 3 ) The radiation at peak emission wa velength will result in the widest central maximum of a single slit diffraction. ( S ) 10000 K ( 4 ) The power emitted per unit area is 1/16 of that emitted by a blackbody at temperature 6000 K. ( 5 ) The radiation at peak emission wavelength can be used to image human bones.
- P 3 , Q 5 , R 2 , S 3
- P 3 , Q 2 , R 4 , S 1
- P 3 , Q 4 , R 2 , S 1
- P 1 , Q 2 , R 5 , S 3
Correct answer: P 3 , Q 4 , R 2 , S 1
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