PHY202
Question: An atom has a radius of
Answer: 10-10 m
Question: A record of the chemical constituents of a substance separated according to their mass and presented as a spectrum is known as
Answer: mass spectra
Question: Atoms of same element having same tomic number but different atomic mass are
Answer: Isotopes
Question: Which of these is not an atomic model?
Answer: none of the options
Question: The radius of the nucleus of an atom is
Answer: 10-16 m
Question: If the electric field in the velocity selector of a Bainbridge mass spectrograph is 104 V/m and the magnetic flux density in both magnetic fields is 0.2 Wb/m2 what is the speed of an ion which will go undeviated through the slit system?
Answer: 5×104 m/s
Question: What are fundamental constituents of an atom?
Answer: protons, neutrons and electrons
Question: A hydrogen atom is in its ground state. Incident on the atom is a photon having an energy of 10.5 eV. What is the result?
Answer: The photon passes by the atom without interaction
Question: Nuclides having same neutron number but different proton number are
Answer: Isotones
Question: Elements having same mass number but different atomic number are
Answer: Isobars
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