Modern-Physics Related Question Answers

1. The statement saying that energy is radiated or absorbed in discrete packets is given by






2. The behavior of matter on atomic level cannot be explained with






3. Quantum effects are important only when observing






4. In e/m experiment we assume nature of electron as











5. Radiation with energy that is easily detected as quanta






6. According to the theory of relativity mass of an object is






7. In photocell cesium coated oxidized silver cathode emits electron for






8. Special theory of relativity treats problems involving






9. According to special theory of relativity which one is not an absolute quantity






10. The max K.E of photo electrons depend upon light's






11. Compton shift is max for scattering angle of






12. At low temperature a body emits radiation of






13. When K.Emax of photoelectrons is zero then the frequency of incident photon relative to threshold frequency is






14. An ideal black body is






15. Rest mass energy of electron is






16. Length contraction happens only






17. The phenomena that can not be understood with the frame work of classical physics is






18. Earth can be considered as






19. An inertial frame of reference is that frame






20. The mass of 70 kg man moving in car at 66kmh is






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