The figure shows different graphs between stopping potential (V0) and frequency (υ) for photosensitive surfaces of cesium, potassium, sodium and lithium. The plots are parallel. Correct ranking of the targets according to their work function greatest first will be:
A. (i) > (ii) > (iii) > (iv)
B. (i) > (iii) > (ii) > (iv)
C. (iv) > (iii) > (ii) > (i)
D. (i) = (iii) > (ii) = (iv)
Answer:C
The figure shows different graphs between stopping potential (V0) and frequency (υ) for photosensitive surfaces of cesium, potassium, sodium and lithium. The plots are parallel. Correct ranking of the targets according to their work function greatest first will be:
A. (i) > (ii) > (iii) > (iv) B. (i) > (iii) > (ii) > (iv) C. (iv) > (iii) > (ii) > (i) D. (i) = (iii) > (ii) = (iv)