0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

If the work function of a potential is 6.875eV, its threshold wavelength will be (Take =c=3×103m/s).
  1. 3600oA
  2. 1800oA
  3. 2400oA
  4. 1200oA

A
2400oA
B
1800oA
C
1200oA
D
3600oA
Solution
Verified by Toppr

The correct option is C 1800oA
W=hcλ
where h is planck's constant, c is speed of light, λ is wavelength
λ=hcW=6.6×1034×3×1086.825×1.6×1019
λ=1800oA.

Was this answer helpful?
0
Similar Questions
Q1
If the work function of a potential is 6.875eV, its threshold wavelength will be (Take =c=3×103m/s).
View Solution
Q2

If the work function of a photometal is 6.825 eV. Its threshold wavelength will be (c=3×108 m/s)


View Solution
Q3

The work function of a metal is 4.2 eV, its threshold wavelength will be


View Solution
Q4
If a photocell is illuminated with a radiation of 1240 A, then stopping potential is found to be 8 V . The work function of the emitter and the threshold wavelength are
View Solution
Q5

If the work function of a photometal is 6.825 eV. Its threshold wavelength will be (c=3×108 m/s)


View Solution