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Most Important Selected Qs for JEE AdvancedPhysicsElectromagnetic Waves

When the voltage applied to an X-ray tube is increased 1.5 times, the minimum wavelength of the continuous X-ray spectrum shifts by 26 pm . Find the initial voltage applied to the tube (approx)

Options

  1. A16 kV
  2. B20 kV
  3. C22 kV
  4. D26 kV

Correct answer

A. 16 kV

Step-by-step solution

aligned & ₁= h c e V₁ & ₂= h c e V₂ & V₂=1.5 V₁ & | ₂- ₁ |= h c 3 e V₁ & 26 10⁻¹²= h c 3 e V₁ aligned

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