Spectroscopy — MCQs

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1. What is spectroscopy primarily used for in astronomy?





2. Which law explains how light spreads into a spectrum through a prism?





3. Who first demonstrated that white light could be split into colors using a prism?





4. The dark lines in the solar spectrum are called:





5. Which type of spectrum is produced by hot, dense objects like stars?





6. An emission spectrum is produced when:





7. Absorption spectra are formed when:





8. Kirchhoff’s first law of spectroscopy states:





9. Spectral lines are unique because they:





10. Which element’s spectral lines were first observed in the Sun before being found on Earth?





11. The study of Doppler shift in spectra helps astronomers measure:





12. A redshift in a galaxy’s spectrum indicates that the galaxy is:





13. A blueshift in a star’s spectrum means:





14. What type of spectroscope uses a diffraction grating?





15. The resolving power of a spectroscope refers to its ability to:





16. Which instrument separates light more efficiently than a prism?





17. Hydrogen’s spectral lines in the visible region are called:





18. The Lyman series of hydrogen lies in which region?





19. The Paschen series of hydrogen lies in which region?





20. Which law explains the relationship between wavelength, frequency, and speed of light?





21. Wien’s displacement law relates a star’s:





22. According to Planck’s law, hotter objects emit:





23. The Zeeman effect in spectroscopy refers to:





24. Spectral line broadening can be caused by:





25. Which element dominates stellar spectra?





26. Spectroscopy allows astronomers to determine a star’s:





27. Which instrument records spectra electronically in modern astronomy?





28. Which effect explains why moving stars change spectral wavelength?





29. A binary star system is often detected by observing:





30. Spectroscopy can be used to study exoplanets by:





31. Stellar classification is based on:





32. The spectral classes of stars follow which sequence?





33. Which spectral type corresponds to the Sun?





34. Molecules in space are detected using which type of spectroscopy?





35. Infrared spectroscopy is useful for studying:





36. X-ray spectroscopy is important for studying:





37. Gamma-ray spectroscopy helps detect:





38. What are absorption bands in planetary spectra mainly caused by?





39. Doppler spectroscopy is widely used in astronomy for:





40. Spectroscopy shows that quasars are:





41. Spectral energy distribution (SED) shows:





42. Which type of spectroscopy measures polarization of light?





43. Raman spectroscopy involves scattering of:





44. Ultraviolet spectroscopy is important for studying:





45. Which type of spectrum do cool stars with molecules show?





46. Stellar radial velocities are measured using:





47. Metallicity of a star is determined through:





48. Which technique uses multiple telescopes to study spectra at high resolution?





49. Spectral classification also indicates a star’s:





50. The first woman to make major contributions in stellar spectroscopy and classification was:





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