The dimension of stopping potential $V_{0}$ in photoelectric effect in units of Planck's constant $h$, speed…

The dimension of stopping potential $V_{0}$ in photoelectric effect in units of Planck's constant $h$, speed of light $c$, Gravitational constant $G$, and ampere $A$ is:
  1. h13G23c13A-1
  2. h0c5G-1A-1
  3. h-23c-13G43A-1
  4. h2G32c13A-1

Solution

V=K(h)a(I)b(G)c(C)d (V is voltage)
We know [h]=ML2T-1
[I]=A
[G]=M-1L3T-2
[C]=LT-1
[V]=ML2T-3A-1
ML2T-3A-1=(ML2T-1)a(A)b(M-1L3T-2)c(LT-1)d
ML2T-3A-1=Ma-cL2a+3c+dT-a-2c-dAb
a-c=1.....(1)
2a+3c+d=2.....(2)
-a-2c-d=-3.....(3)
b=-1...(4)
On solving
c=-1
a=0
d=5,b=-1
V=K(h)0(A)-1(G)-1(C)5

Asked in: JEE Main 2020 (08 Jan Shift 1)

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