logo
  • Home
  • Test & Rank
  • About
  • Training
  • Programming
  • CS
  • IT
  • IS
  • ECE
  • EEE
  • EE
  • Civil
  • Mechanical
  • Chemical
  • Metallurgy
  • Instrumentation
  • Aeronautical
  • Aerospace
  • Biotechnology
  • Mining
  • Marine
  • Agriculture
  • MCA
  • BCA
  • Internship
  • Jobs
  • Contact

Engineering Physics Multiple Choice Questions | MCQs | Quiz

Engineering Physics Interview Questions and Answers
Practice Engineering Physics questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

Get Started

•   Laws Governing Gravity
•   Gravity Acceleration
•   Scalar & Vector
•   Plane Motion - 1
•   Plane Motion - 2
•   Forces
•   Gravity
•   Gravity Effect
•   Friction & Forces - 1
•   Friction & Forces - 2
•   Friction & Forces - 3
•   Nature Laws
•   Acceleration
•   Friction & Motion
•   Energy Conservation
•   Inertia Moment
•   Work, Energy & Power
•   Collision & Friction
•   Work & Energy
•   Restitution Coefficient
•   Forces & Inertia
•   Nature Forces
•   Gravitational & Gravity
•   Work Done
•   Centripetal Force
•   Energy
•   Inertia Moment
•   Inertia Significance
•   Rotational Motion
•   Angular Momentum
•   Torque & Momentum
•   Translational Motion
•   Solids Classification
•   Body Weight
•   Earth Mass & Density
•   Gravitational Field
•   Gravitational Potential Field
•   Liquid Thurst
•   Buoyancy
•   Thermal Conduction
•   Temperature & Heat
•   Elasticity
•   Elastic Limit
•   Stress & Strain
•   Streamline & Turbulent Flow
•   Thermal Conductivity
•   Thermal Expansion
•   Orbital Velocity
•   Latent Heat
•   Absorption & Emission
•   Thermodynamics - 1
•   Thermodynamics - 2
•   Thermal Equilibrium
•   Heat & Thermodynamics
•   Isothermic & Adiabatic
•   Gases Kinetic Theory
•   Gases
•   Ideal Gases - 1
•   Ideal Gases - 2
•   Gases & Reactions
•   Oscillatory Motion - 1
•   Oscillatory Motion - 2
•   Periodic Motion
•   Harmonic Motion - 1
•   Harmonic Motion - 2
•   Harmonic Oscillation
•   Oscillations - 1
•   Oscillations - 2
•   Wave Motion - 1
•   Wave Motion - 2
•   Transverse Waves - 1
•   Tansverse Waves - 2
•   Longitudinal Waves
•   Progressive Waves
•   Travelling Waves
•   Stationary Waves
•   Waves Superposition
•   Reverberation - 1
•   Reverberation - 2
•   Acoustics
•   Beats
•   Sounds & Waves - 1
•   Sounds ans Waves - 2
•   Magnetostriction Effect
•   Michelson Experiment
•   Einstein's Special Theory
•   Lorentz Transformation
•   Velocities Law
•   Mass Energy Relation
•   Mass Variation - Velocity
•   Compton Effect
•   Waves
•   Black Body Radiation
•   PhotoElectric Effect
•   X Rays
•   Pair Productions
•   Elastic Waves
•   Schrodinger Equation
•   Linearity & Superposition
•   Schrodinger - Steady State
•   Box Particle
•   Finite Potential Well
•   Tunnel Effect
•   Quantum Number
•   Electron Probability Density
•   Zeeman Effect
•   Raman Effect
•   Maxwell Boltzmann
•   Fermi-Dirac Distribution
•   Bose-Einstein Distribution
•   Dying Stars
•   Cosmology
•   Nuclear Fission Reactor
•   Nuclear Fusion

Best Reference Books

Engineering Physics Books

« Prev Page
Next Page »

Engineering Physics Questions and Answers – Temperature and Specific Heat

Posted on May 14, 2017 by staff10

This set of Engineering Physics Multiple Choice Questions & Answers (MCQs) focuses on “Temperature and Specific Heat”.

1. A quantity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as ___________
a) Latent heat
b) Sublimation
c) Hoar frost
d) Latent heat of fusion
View Answer

Answer: d
Explanation: The amount of heat required to change the state of the unit mass of a substance from solid at its melting point is called latent heat of fusion.
advertisement

2. A constant pressure air thermometer gave a reading of 47.5 units of volume, when immersed in ice-cold water, and 67 units in a boiling liquid. What is the boiling point of the liquid?
a) 100°C
b) 112°C
c) 125°C
d) 135°C
View Answer

Answer: b
Explanation: From Charles’s law,
V1/T1 = V2/T2
47.5/(0+273)=67/T2
T2=(67×273)/47.5=385K
T2=112°C.

3. The bulb of one thermometer is spherical, while that of other is cylindrical. If both of them have an equal amount of mercury, which one will respond quickly to the temperature?
a) Spherical
b) Cylindrical
c) Elliptical
d) Circle
View Answer

Answer: b
Explanation: As the square area of a cylindrical bulb is larger than a spherical bulb, heat will be transmitted quickly through a cylindrical bulb and it will respond quickly to the temperature.

4. A black body at a high temperature T K radiates energy at the rate of E Wm-2. When the temperature falls to T/2 K, the radiated energy will be ___________
a) E/4
b) E/2
c) 2E
d) E/16
View Answer

Answer: d
Explanation: E‘/E=((T/2)/T)4=1/16
E‘=E/16.

5. On increasing the temperature of a substance gradually, its colour becomes ___________
a) Red
b) Green
c) Yellow
d) White
View Answer

Answer: c
Explanation: By Wien’s law
ʎm is proportioanl to 1/T
On increasing temperature, wavelength decreases. As yellow colour has minimum wavelength, the substance gradually becomes yellow.
advertisement

6. Assertion: Good conductors of heat are also good conductors of electricity and vice-versa.
Reasons: Mainly electrons are responsible for these conductors.
a) Both assertion and reason are true and the reason is the correct explanation of the assertion
b) Both assertion and reason are true but the reason is not a correct explanation of the assertion
c) Assertion is true but the reason is false
d) Both assertion and reason are false
View Answer

Answer: a
Explanation: Both the assertion and reason are true. Good conductors have a large number of free electrons which make them good conductors both heat and electricity.

7. A centigrade and Fahrenheit thermometers are dipped in boiling water. The water temperature is lowered until the Fahrenheit thermometer registers 140°. What is the fall in temperature registered by the centigrade thermometer?
a) 80°C
b) 60°C
c) 360°C
d) 30°C
View Answer

Answer: c
Explanation: C/5=(F-32)/9=(140-32)/9=108/2=12
C=60°C
On centigrade scale, the boiling point of water is 100. Therefore, fall in temperature registered by the centigrade thermometer = 100-60 = 40°C.

8. If 1g of steam is mixed with 1g of ice, what is the resultant temperature of the mixture?
a) 270°
b) 230°
c) 100°
d) 50°
View Answer

Answer: c
Explanation: Heat required to change 1g of ice at 0°C first into the water at 0°C and then into the water at 100°C,
Q=mL+mc∆T=1×80+1×1×100=180cal
Now 1g of steam carries 540cal of heat when 1g of steam is mixed with 1g of ice, entire steam will not condense. Finally, we will have a mixture of water and steam at 100°C.

9. A beaker full of hot water is kept in a room. If it cools from 80°C to 75°C in t1 minutes, from 75°C to 70°C in t2 minutes and from 70°C to 65°C in t3 minutes, then ___________
a) t1=t2=t3
b) t1 < t2 = t3
c) t1 < t2 < t3
d) t1 > t2 > t3
View Answer

Answer: c
Explanation: According to Newton’s law of cooling, Rate of cooling is proportional to temperature difference of the body and its surroundings.
As the temperature of the body approaches the room temperature, rate of cooling decreases.
t1 < t2 < t3.

10. A black body is at 727°C. It emits energy at a rate, which is proportional to ___________
a) (727)2
b) (1000)2
c) (727)4
d) (1000)4
View Answer

Answer: d
Explanation: Eα(273+727)4
Eα(1000)4.
advertisement

11. Gas thermometers are more sensitive than a mercury thermometer.
a) True
b) False
View Answer

Answer: a
Explanation: The coefficient of expansion of a gas in very large as compared to the coefficient of expansion of mercury. For the same temperature range, a gas would undergo a much larger change in volume as compared to mercury.

12. A spherical body of area A and emissivity e = 0.6 is kept inside a perfectly black body. Energy radiated per second by the body at temperature T is ___________
a) 0.4σAT4
b) 0.8 σAT4
c) 0.6 σAT4
d) 1.0 σAT4
View Answer

Answer: c
Explanation: According to Stefan’s law, energy radiated per second by a body of emissivity e at a temperature T,
E = e σAT4
E = 0.6 σAT4.

Sanfoundry Global Education & Learning Series – Engineering Physics.

To practice all areas of Engineering Physics, here is complete set of 1000+ Multiple Choice Questions and Answers.

« Prev Page - Engineering Physics Questions and Answers – Thermal Conduction
» Next Page - Engineering Physics Questions and Answers – Elasticity

« Engineering Physics Questions and Answers – Thermal Conduction
Electromagnetic Theory Questions and Answers – Plane Waves in Good Conductor »
advertisement

Deep Dive @ Sanfoundry:

  1. Steam and Gas Turbines Questions and Answers
  2. Thermodynamics Questions and Answers
  3. Chemical Engineering Questions and Answers
  4. Mechanical Engineering Questions and Answers
  5. Energy Engineering Questions and Answers
  6. Engineering Physics II Questions and Answers
  7. Power Plant Questions and Answers
  8. Heat Transfer Operations Questions and Answers
  9. Heat Transfer Questions and Answers
  10. Engineering Physics I Questions and Answers
Manish Bhojasia
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer & SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage, Advanced C Programming, SAN Storage Technologies, SCSI Internals & Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him @ LinkedIn | Facebook | Twitter

Best Careers

Developer Tracks
SAN Developer
Linux Kernel Developer
Linux Driver Developer
Linux Network Developer

Live Training Photos
Mentoring
Software Productivity
GDB Assignment
Sanfoundry is No. 1 choice for Deep Hands-ON Trainings in SAN, Linux & C, Kernel Programming. Our Founder has trained employees of almost all Top Companies in India such as VMware, Citrix, Oracle, Motorola, Ericsson, Aricent, HP, Intuit, Microsoft, Cisco, SAP Labs, Siemens, Symantec, Redhat, Chelsio, Cavium, ST-Micro, Samsung, LG-Soft, Wipro, TCS, HCL, IBM, Accenture, HSBC, Mphasis, Tata-Elxsi, Tata VSNL, Mindtree, Cognizant and Startups.

Best Trainings

SAN I - Technology
SAN II - Admin
Linux Fundamentals
Advanced C Training
Linux-C Debugging
System Programming
Network Programming
Linux Threads
Kernel Programming
Kernel Debugging
Linux Device Drivers

Best Reference Books

Computer Science Books
Algorithm & Programming Books
Electronics Engineering Books
Electrical Engineering Books
Chemical Engineering Books
Civil Engineering Books
Mechanical Engineering Books
Industrial Engineering Books
Instrumentation Engg Books
Metallurgical Engineering Books
All Stream Best Books

Questions and Answers

1000 C Questions & Answers
1000 C++ Questions & Answers
1000 C# Questions & Answers
1000 Java Questions & Answers
1000 Linux Questions & Answers
1000 Python Questions
1000 PHP Questions & Answers
1000 Hadoop Questions
Cloud Computing Questions
Computer Science Questions
All Stream Questions & Answers

India Internships

Computer Science Internships
Instrumentation Internships
Electronics Internships
Electrical Internships
Mechanical Internships
Industrial Internships
Systems Internships
Chemical Internships
Civil Internships
IT Internships
All Stream Internships

About Sanfoundry

About Us
Copyright
Terms
Privacy Policy
Jobs
Bangalore Training
Online Training
Developers Track
Mentoring Sessions
Contact Us
Sitemap
© 2011 Sanfoundry. All Rights Reserved.