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Practice MCQ Questions and answers on Physics-GK

Learn and practice General Knowledge questions and answers on Physics with very easy and understandable explanations. GK questions are very helpful different type of competitive exams. Page-6 section-12

Each section contains 100 MCQs on Physics .
51
According to Rutherford's atomic model, the electrons inside an atom are
Discuss
Answer & Solution
Answer: Option B
Solution:
According to Rutherford's atomic model, the electrons inside an atom are not stationary.
52
Electrons carry a
Discuss
Answer & Solution
Answer: Option B
Solution:
Electrons carry a negative charge.
53
An atom with more neutrons than protons is called
Discuss
Answer & Solution
Answer: Option C
Solution:
An atom with more neutrons than protons is called isotope.
54
What part of the atom has a positive charge?
Discuss
Answer & Solution
Answer: Option B
Solution:
Proton has a positive charge.
55
Who was the first scientist to discover Electrons?
Discuss
Answer & Solution
Answer: Option D
Solution:
J.J. Thompson was the first scientists to discover electrons.
56
The wave like properties of electrons are useful in
Discuss
Answer & Solution
Answer: Option A
Solution:
The wave like properties of beams of electrons are useful in magnifying objects. The electrons in an electron microscope have much smaller wavelengths than visible light. This allows a much clearer enlarged image of a very small object, such as this mite.
57
Who indirectly determined the mass of the electron by measuring the charge of the electron?
Discuss
Answer & Solution
Answer: Option B
Solution:
Millikan determined the mass of the electron by measuring the charge of the electron.
58
When an atom loses an electron it becomes
Discuss
Answer & Solution
Answer: Option C
Solution:
When an atom loses electron(s) it will lose some of its negative charge and so becomes positively charged. A positive ion is formed where an atom has more protons than electrons.
59
What is the size of Electron as comapared to Proton and Neutron?
Discuss
Answer & Solution
Answer: Option C
Solution:
Electrons are tiny compared to protons and neutrons, over 1,800 times smaller than either a proton or a neutron. 1836 times smaller to be exact.
60
The force that binds the neutrons and protons in a nucleus is called as:
Discuss
Answer & Solution
Answer: Option B
Solution:
Strong Nuclear Force is the force that binds the neutrons and protons in a nucleus.