BSC Physics Books 1st Year. We covered all the BSC Physics Books 1st Year MCQs in this post for free so that you can practice well for the exam.
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BSC Physics Books 1st Year Objective for Students
The de-Broglie wavelength of an electron beam accelerated through a potential difference of 60 volts is
a. 1.51 Å
b. 2.2 Å
c. 420 Å
d. 1.5 Å
Option d – 1.5 Å
The de-Broglie wavelength associated with an electron of energy 5 MeV is
a. 5.4 Å
b. 0.0054 Å
c. 0.0005 Å
d. 500 Å
Option b – 0.0054 Å
The work function of the photoelectric effect depends on
a. on metal surface
b. frequency of incident light
c. for all metals work functions the same
d. none of the above
Option a – on metal surface
The charge of an alpha particle
a. Negative
b. Neutral
c. Positive
d. None of the above
Option c – Positive
Protons and Neutrons in the nuclei of atoms are called
a. Quantum number
b. Atomic number
c. Neucleons
d. None of the above
Option c – Neucleons
Spectral lines resulting from the transitions n=2 to n=1 in the atoms and ions are shortest wavelength produced by
a. Double ionized lithium
b. Hydrogen atom
c. Deuterium atom
d. Helium atom
Option a – Double ionized lithium
Cathode rays consist of negatively charged particles which are
a. Photons
b. Positrons
c. Neutrons
d. Electrons
Option d – Electrons
Who developed the radiocarbon dating of archaeological samples
a. W.F. Libby
b. Otto Hahn
c. Fermi
d. de-Broglie
Option b – Otto Hahn
The photoelectric effect studies are useful for
a. the quantum nature of matter
b. structure of the nucleus
c. Bohr’s atomic model
d. none of the above
Option a – the quantum nature of matter
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