Physics MCQs

Correct answer B. Electron excitation in the gas

Correct answer D. The wavelengths of X-rays are of the same order of magnitude as the separation between atoms in a crystal

Correct answer C. The kinetic energy of the incident electron i.e. the potential difference through which they are accelerated

Correct answer D. 6.2 × 10⁻¹⁰ m

Correct answer B. The bombardment of target by electrons

Correct answer A. Increasing the potential difference between the cathode and the target

Correct answer D. X-rays

Correct answer D. hc/eV

Correct answer B. B & C

Correct answer D. Γ-rays

Correct answer C. γ-rays

Correct answer A. Infrared radiation

Correct answer A. X-rays production

Correct answer A. frequency

Correct answer C. 4th orbit

Correct answer C. -ke²/rn

Correct answer C. -0.85 eV

Correct answer B. Continuous spectra for atoms

Correct answer B. Radiate electromagnetic energy of discrete characteristic wavelength

Correct answer C. shadow photograph