Quiz for X-rays

Q1: Which part of the electromagnetic spectrum do X-rays belong to?

A. Radio waves B. Infrared C. Ultraviolet D. High-frequency electromagnetic waves

Q2: X-rays are produced in

A. Nuclear fusion B. Photoelectric effect C. X-ray tube D. Electrolysis

Q3: Which of the following is not an application of X-rays?

A. Cancer treatment B. Imaging bones C. Television signal transmission D. Material testing

Q4: X-rays were discovered by

A. Rutherford B. Roentgen C. Bohr D. Planck

Q5: Which metal is commonly used as the target in X-ray tubes?

A. Aluminium B. Copper C. Tungsten D. Iron

Q6: Which of the following X-rays has the shortest wavelength?

A. Hard X-rays B. Soft X-rays C. Ultraviolet rays D. Microwaves

Q7: Which of the following rays are most penetrating?

A. Gamma rays B. X-rays C. Ultraviolet rays D. Infrared rays

Q8: What is the main cause of X-ray emission in an X-ray tube?

A. Electron-positron annihilation B. Electrons decelerating at the anode C. Photon scattering D. Nuclear fission

Q9: X-rays can be used to determine

A. Color of objects B. Molecular mass C. Crystal structure D. Boiling point

Q10: The intensity of X-rays is controlled by

A. Voltage B. Current C. Wavelength D. Frequency

Q11: The penetrating power of X-rays depends on

A. Tube current B. Wavelength C. Target material D. Tube voltage

Q12: X-rays can ionize gases because

A. They have low energy B. They are mechanical waves C. They are electromagnetic radiation with high energy D. They are visible light

Q13: Which of the following properties is not characteristic of X-rays?

A. Travel at the speed of light B. Have charge and mass C. Can ionize matter D. Can affect photographic plates

Q14: In medical imaging, which type of X-rays are generally used?

A. Soft X-rays B. Hard X-rays C. Gamma rays D. Ultraviolet rays

Q15: X-rays differ from gamma rays in

A. Their origin B. Their speed C. Their energy D. Their wavelength

Q16: Which process does not emit X-rays?

A. Electron impact B. Nuclear decay C. Excitation of electrons D. De-excitation of nucleus

Q17: The energy of an X-ray photon is given by

A. E = mc² B. E = hv C. E = hf² D. E = hλ

Q18: X-rays affect photographic plates because

A. They reflect light B. They are luminous C. They produce fluorescence D. They cause chemical change

Q19: In Bragg’s law, X-rays are used to study

A. Refraction B. Interference C. Crystalline structures D. Conductivity

Q20: The continuous X-ray spectrum arises due to

A. Photoelectric effect B. Bremsstrahlung C. Compton effect D. Pair production