Physics
Grade-9
Easy
Question
Which fundamental particle in an atom has no charge?
- Electron
- Proton
- Neutron
- Both (A) and (B)
The correct answer is: Neutron
Protons have a positive charge and electrons have a negative charge. Neutrons are the sub-atomic particles having no electrical charge.
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What is the nature of the force which is experienced between an electron and a proton?
What is the nature of the force which is experienced between an electron and a proton?
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An electrically neutral material has __________ number of positive and negative charges.
An electrically neutral material has __________ number of positive and negative charges.
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Unlike charges _______ each other.
Unlike charges _______ each other.
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An atom has ___________ charge.
An atom has ___________ charge.
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During an isothermal process 125 J of heat are removed from a trapped gas. Find out the change in internal energy of the system.
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In an isothermal process the change in internal energy of the system is ____.
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During a thermodynamic process, 438 J of heat is removed from a gas system while 238 J of work is done on the gas. The change in internal energy of a system is _____ J.
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A cold reservoir is touched to a system, which of the following may happen?
A cold reservoir is touched to a system, which of the following may happen?
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When there is no heat exchange between the system and the reservoir, ____.
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The internal energy of a system does not change in a/an _____ process.
(A) Isothermal
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(D) Isobaric
The internal energy of a system does not change in a/an _____ process.
(A) Isothermal
(B) Adiabatic
(C) Isochoric
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Energy can be added to a system by ____.
Energy can be added to a system by ____.
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Internal energy denotes ______.
Internal energy denotes ______.
PhysicsGrade-9
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When the pressure inside the system is smaller than the pressure outside it, the work is done ______.
When the pressure inside the system is smaller than the pressure outside it, the work is done ______.
PhysicsGrade-9
