Answer:
(i) Work function of metal \[{{M}_{1}},\]\[{{W}_{1}}=h{{v}_{01}}\] Work function of metal \[{{M}_{2}},{{W}_{2}}=h{{v}_{02}}\] (ii) From Fig. (b), slope of \[V-v\]lines \[=\frac{AB}{BC}=\frac{{{V}_{1}}-{{V}_{2}}}{{{v}_{02}}-{{v}_{01}}}\]
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