Modern Physics I - SS3 Physics Past Questions and Answers - page 2
Who developed the uncertainty principle?
Schrodinger
Heisenberg
Maxwell
Ohm
What is the disparity in view of classical physics and quantum mechanics on the nature of particles?
In classical physics, particles are treated as discrete, point-like objects that can be accurately located in space and time. However, in quantum mechanics, particles are described by wave functions, which are mathematical representations of the probability distribution of the particle's position and momentum.
Describe the double-split experiment
In the double-slit experiment, particles such as electrons or photons are fired through two slits and create an interference pattern on a screen behind the slits. This interference pattern is characteristic of waves, and can only be explained if we assume that the particles are behaving like waves.
Which of the following statements is NOT a part of the Bohr model of the atom?
Electrons exist in fixed energy levels around the nucleus.
Electrons can absorb or emit energy when they jump between energy levels.
The energy of an electron is quantized.
Electrons can exist anywhere in space around the nucleus.
The angular momentum of an electron in a given energy level is quantized.
Which of the following statements about the Bohr model of the atom is correct?
Electrons are free to move anywhere around the nucleus.
Electrons can only occupy certain discrete energy levels.
The nucleus is surrounded by a cloud of negative charge.
Electrons are confined to a specific point in space.
The following are the components of an atom except?
Protons
Neutrons
Cells
Electrons
How many shells are in the Bohr atomic structure model?
8
6
4
10
In the Bohr model, electrons in the innermost orbit have the ___ energy, while the outermost have the __ energy
Proportional and differing
Lowest and highest
Strongest and weakest
Equal and same
What is atomic structure?
The atomic structure describes the arrangement of subatomic particles, including protons, neutrons, and electrons, within an atom.
What is Bohr’s model?
The Bohr model is a simplified model of the atom proposed by Danish physicist Niels Bohr in 1913, which helped to explain the behaviour of atoms and their spectral lines.