Physics MCQs with Answers

B. Derived quantities

C. Prefixes

D. Quartile quantities

{
“@context”: “http://schema.org”,
“@type”: “Question”,
“name”: “Length, mass, time, intensity of light and amount of substance are examples of ____________?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Base quantities”
}
}

B. 1/3 times

D. 1/58 times

The Coulomb force between two charges in a medium is given by Coulomb’s law, which states that the force is inversely proportional to the dielectric constant (relative permittivity) of the medium. Water has a high dielectric constant, which significantly reduces the Coulomb force between the charges.

The dielectric constant of water is approximately 78. Therefore, the Coulomb force between two charges placed in water is reduced to:

C. 1/78 times

{
“@context”: “http://schema.org”,
“@type”: “Question”,
“name”: “When two charges are placed in water then the Coulomb force between them reduces to _____________?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “1/78 times”
}
}

B. The speed of other object

C. The speed of light

D. The speed of air resistance

{
“@context”: “http://schema.org”,
“@type”: “Question”,
“name”: “Mach is the unit of measurement in stating the speed of a moving object in relation to__________?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “The speed of sound”
}
}

B. Isobaric

D. Isothermal

The term “adiabatic” refers to a process in which no heat is transferred into or out of the system. This means that the system is thermally isolated from its surroundings, resulting in no heat exchange.

A. Isochoric:

An isochoric process is a thermodynamic process in which volume remains constant (i.e., no change in volume). Heat may enter or leave the system, but the volume remains constant.

B. Isobaric:

An isobaric process is a thermodynamic process that occurs at a constant pressure. During an isobaric process, heat may enter or leave the system, but the pressure remains constant.

C. Adiabatic:

An adiabatic process is a thermodynamic process in which no heat is transferred into or out of the system. In other words, the system is thermally insulated from its surroundings, so there is no heat exchange during the process.

D. Isothermal:

An isothermal process is a thermodynamic process that occurs at a constant temperature. During an isothermal process, heat may enter or leave the system, but the temperature remains constant.

{
“@context”: “http://schema.org”,
“@type”: “Question”,
“name”: “The process in which no heat enters or leave the system known as _____________?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “adiabatic”
}
}

C. Enthalpy

D. Entropy

{
“@context”: “http://schema.org”,
“@type”: “Question”,
“name”: “Which of the following is path funtion?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “work and heat”
}
}

B. 760 mmHg

C. 101.3 kPa

D. all of the above

{
“@context”: “http://schema.org”,
“@type”: “Question”,
“name”: “1atm is equal to”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “all of the above”
}
}

B. Frequency

D. Velocity

{
“@context”: “http://schema.org”,
“@type”: “Question”,
“name”: “Product of time period and frequency is ____________?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Unity”
}
}

C. Time period

D. Wavelength

{
“@context”: “http://schema.org”,
“@type”: “Question”,
“name”: “Product of wavelength and time period is _______________?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Velocity”
}
}

B. Velocity

D. Frequency

{
“@context”: “http://schema.org”,
“@type”: “Question”,
“name”: “Unit vector is used to specify the _____________?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Direction of vector”
}
}