1 1 2 2 3 3 4 4 4 Five elements A B C D and E have work functions 1 2 eV 2 4 eV 3 6 eV 4 8 eV and 6 eV respectively If light of wavelength 4000 is allowed to fall on these elements then photoelectrons are emitted by 1 A B and C 2 A B C D and E 4 Only E 15 3 A and B A Carnot engine with sink s temperature at 17 C 14 15 1 1 2 2 A B C D i E 1 2 eV 2 4 eV 3 6 eV 4 8 eV a 6 eV 4000 Aff fl 1 A BUC 3 AB gta 3 3 eft 2 A B C D E 4 E arm 50 fi
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