Work function of sodium is 2.3 eV. Does sodium show photoelectric emission for orange light `(lambda=6800Å)`?
Given `h=6.63xx10^(-34)Js`

Explanation

To determine whether sodium shows photoelectric emission for orange light with a wavelength of 6800 Å, we need to compare the energy of the photons of this light with the work function of sodium.

### Step-by-Step Solution:

**Step 1: Convert the wavelength from angstroms to meters.**

Given:
- Wavelength, \( \lambda = 6800 \, \text{Å} = 6800 \times 10^{-10} \, \text{m} \)
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