Question

An X-ray tube is operated at 1.24 million volt. The shortest wavelength of the produced photon will be:

विकल्प

• 10^-3 nm

• 10^-1 nm

• 10^-2 nm

• 10^-4 nm

Answer 1

10^-3 nm

Explanation:

We know that

E = eΔV

Here, V = voltage,

`"hc"/lambda` = eΔV         e = charge on electron

⇒ λ = `"hc"/("e"Delta"V")`

[put, h = 6.63 × 10^-34 Js,

C = 3 × 10⁸ m/s, e = 1.6 × 10^-19 C]

We get

`lambda_min=1240/(Delta"V")`(nm)

= `1240/(1.24xx10^6)`

= 10^-3 nm