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Biophysics — MCQs

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1. The unit of force in the SI system is:





2. The unit of energy in the SI system is:





3. The unit of power is:





4. The unit of pressure is:





5. The unit of electric current is:





6. The unit of resistance is:





7. The unit of frequency is:





8. The SI unit of work is:





9. The unit of charge is:





10. The unit of voltage is:





11. The basic unit of magnetic flux density is:





12. The speed of light in vacuum is approximately:





13. The basic unit of wavelength is:





14. X-rays are a type of:





15. The range of visible light wavelengths is approximately:





16. Ultrasound waves have frequencies:





17. MRI uses which type of radiation?





18. The Bohr model describes electrons as:





19. In electrophoresis, molecules are separated based on:





20. The unit of radioactive decay is:





21. The half-life of a radioactive isotope refers to:





22. Which radiation has the highest energy?





23. The unit of heat is:





24. The process of heat transfer without matter flow is:





25. The double helix of DNA is stabilized by:





26. Surface tension is caused by:





27. Osmosis involves the movement of:





28. The osmotic pressure is directly proportional to:





29. pH is defined as:





30. The pH of human blood is approximately:





31. The energy of a photon is given by:





32. The mass-energy equivalence principle is given by:





33. The unit of electrical capacitance is:





34. Which type of radiation is used for sterilization?





35. The unit of refractive index is:





36. Light changes its direction when passing from one medium to another. This is called:





37. The scattering of light by particles smaller than wavelength is called:





38. The basic unit of inductance is:





39. The electrical conductivity of metals is due to:





40. The fundamental particle with negative charge is:





41. The radiation used in cancer therapy is:





42. In ultrasound imaging, high-frequency waves are used because:





43. The SI unit of entropy is:





44. Which law of thermodynamics states that energy cannot be created or destroyed?





45. Diffusion rate is governed by:





46. The instrument used to measure blood pressure is:





47. The heart’s electrical activity is recorded using:





48. The resting membrane potential of a typical neuron is:





49. The unit of radiation dose absorbed is:





50. The unit of equivalent biological effect of radiation is:





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