Physics – Atoms Molecules and Nuclei – TEST (MCQ Maharashtra HSC Board)
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#1. Which of the following is true for a radioactive nucleus?
#2. In Davisson Germer experiment the angel of diffraction is 52˚. What is the glancing angle?
#3. What are nuclei that have the same number of protons but different number of neutrons called?
#4. The half life of a radioactive element is 6 days. How much time is required for the decay of 7/8 of the element?
#5. These rays have the maximum penetrating power
#6. An α particle can be expressed as being composed of
#7. The Layman transitions involve
#8. What is the radius of Bohr’s orbit proportional to?
#9. What did the experiment of Davisson and Germer prove?
#10. Who promoted the idea of matter waves?
#11. The series which lies in the ultra-violet region of the spectrum of a hydrogen atom is called
#12. The radius of the hydrogen atom in the second excited sates is
#13. Produced by the angular moment of electrons?