World's only instant tutoring platform
dropdown-logo
Become a tutorPartnershipsAbout usStudent loginTutor login
About us
Login
App StorePlay Store
Get 2 FREE Instant-Explanations on Filo with code FILOAPP
Sunil and his parents were travelling to their village in thei
Question
Easy
Timing Icon

Solving time: 2 mins

Sunil and his parents were travelling to their village in their car. On the way his mother noticed some grey coloured panels installed on the roof of a low building. She enquired from Sunil what those panels were and Sunil told his mother that those were solar panels.
(a) What were the values displayed by Sunil and his mother ? State one value for each.
(b) In what way would the use of solar panels prove to be very useful ?
(c) Name the semiconductor device used in solar panels. Briefly explain with the help of a diagram, how this device works.

Views

Views: 5,890 students

Exam

Exam:

Class 12th Board 2017

tutor 0tutor 1tutor 2
Found 7 tutors discussing this question
Alexander Discussed
Sunil and his parents were travelling to their village in their car. On the way his mother noticed some grey coloured panels installed on the roof of a low building. She enquired from Sunil what those panels were and Sunil told his mother that those were solar panels.
(a) What were the values displayed by Sunil and his mother ? State one value for each.
(b) In what way would the use of solar panels prove to be very useful ?
(c) Name the semiconductor device used in solar panels. Briefly explain with the help of a diagram, how this device works.
5 mins ago
Discuss this question LIVE
5 mins ago

Text SolutionText solutionverified iconVerified

a) Value displayed by mother are inquisitive and scientific temperament. Value displayed by Sunil are knowledgeable and helpful.
b) Solar energy provide clean energy. It reduces dependence on fossil fuels. Environment friendly energy source.
c) Solar Cell
Solution Image
Working: When light falls on the device the solar cell generates an emf.
Was this solution helpful?
57
Share
Report
One destination for complete JEE/NEET preparation
One destination to cover all your homework and assignment needs
Learn Practice Revision Succeed
Instant 1:1 help, 24x7
Instant 1:1 help, 24x7
60, 000+ Expert tutors
60, 000+ Expert tutors
Textbook solutions
Textbook solutions
Big idea maths, McGraw-Hill Education etc
Big idea maths, McGraw-Hill Education etc
Essay review
Essay review
Get expert feedback on your essay
Get expert feedback on your essay
Schedule classes
Schedule classes
High dosage tutoring from Dedicated 3 experts
High dosage tutoring from Dedicated 3 experts
Trusted by 4 million+ students

Questions from Class 12th Board 2017 - PYQs

Question 1
Easy
Views

Views: 5,242

(a) How are electromagnetic waves produced? Explain.
(b) A plane electromagnetic wave is travelling through a medium along the +ve direction. Depict the electromagnetic wave showing the directions of the oscillating electric and magnetic fields.
Topic

Topic:

Electromagnetic Waves

Exam

Exam:

Class 12th Board 2017

View solution

Question 2
Easy
Views

Views: 5,663

Does the magnifying power of a microscope depend on the colour of the light used? Justify your answer.
Topic

Topic:

Ray Optics and Optical Instruments

Exam

Exam:

Class 12th Board 2017

View solution

Question 3
Easy
Views

Views: 5,587

Draw logic symbol of an OR gate and write its truth table.
Topic

Topic:

Semiconductor Electronics: Materials, Devices and Simple Circuits

Exam

Exam:

Class 12th Board 2017

View solution

Question 4
Easy
Views

Views: 5,886

A photosensitive surface emits photoelectrons when red light falls on it. Will the surface emit photoelectrons when blue light is incident on it? Give reason.
Topic

Topic:

Dual Nature of Radiation and Matter

Exam

Exam:

Class 12th Board 2017

View solution

filo Logo

Practice questions from Semiconductor Electronics: Materials, Devices and Simple Circuits in the same exam

Question 1
Easy
Views

Views: 5,632

(a) Draw circuit diagram and explain the working of a Zener diode as a dc voltage regulator with the help of its I-V characteristic.
(b) What is the purpose of heavy doping of p- and n-sides of a Zener diode?
Topic

Topic:

Semiconductor Electronics: Materials, Devices and Simple Circuits

Exam

Exam:

Class 12th Board 2020

View solution

Question 2
Easy
Views

Views: 5,414

A zener diode has
  1. heavily doped p-side and lightly doped -side.
  2. heavily doped -side and lightly doped p-side.
  3. heavily doped -side as well as -side.
  4. lightly doped -side as well as -side.
Topic

Topic:

Semiconductor Electronics: Materials, Devices and Simple Circuits

Exam

Exam:

Class 12th Board 2020

View 3 solutions

Question 3
Easy
Views

Views: 5,125

Draw a block diagram of a detector for AM signal and show, using necessary processes and the waveforms, how the original message signal is detected from the input AM wave.
Topic

Topic:

Semiconductor Electronics: Materials, Devices and Simple Circuits

Exam

Exam:

Class 12th Board 2015

View solution

Question 4
Easy
Views

Views: 5,396

A signal of low frequency is to be transmitted using a carrier wave of frequency . Derive the expression for the amplitude modulated wave and deduce expressions for the lower and upper sidebands produced. Hence, obtain the expression for modulation index.
Topic

Topic:

Semiconductor Electronics: Materials, Devices and Simple Circuits

Exam

Exam:

Class 12th Board 2019

View solution

Practice more questions from Semiconductor Electronics: Materials, Devices and Simple Circuits

Question 1
Easy
Views

Views: 5,355

A ground receiver station is receiving a signal at , transmitted from a ground transmitter at a height of located at a distance of . Identify whether it is coming via:(Radius of earth= ); of ionosphere
  1. Ground wave propagation
  2. Space wave propagation
  3. Sky wave propagation
  4. Satellite communication
Topic

Topic:

Semiconductor Electronics: Materials, Devices and Simple Circuits

View 2 solutions

Question 2
Easy
Views

Views: 5,092

The breakdown in a reverse biased junction is more likely to occur due to
  1. large velocity of the minority charge carriers if the doping concentration is small
  2. large velocity of the minority charge carriers if the doping concentration is large
  3. strong electric field in a depletion region if the doping concentration is small
  4. 1) strong electric field in the depletion region if the doping concentration is large
Topic

Topic:

Semiconductor Electronics: Materials, Devices and Simple Circuits

Book

Book:

Physics Exemplar (NCERT Exemplar)

View 3 solutions

Question 3
Hard
Views

Views: 5,142

A Zener diode having a breakdown voltage is connected in reverse bias with a battery of emf and a resistance of in series. The current flowing through the Zener is
Topic

Topic:

Semiconductor Electronics: Materials, Devices and Simple Circuits

View solution

Question 4
Medium
Views

Views: 6,242

A silicon speciman is made into a P-type semiconductor by dopping, on an average, one Indium atom per silicon atoms. If the number density of atoms in the silicon specimen is atoms then the number of acceptor atoms in silicon per cubic centimetre will be :
Topic

Topic:

Semiconductor Electronics: Materials, Devices and Simple Circuits

Book

Book:

Fundamentals of Physics, Extended

View 5 solutions

View more

Practice questions on similar concepts asked by Filo students

Question 1
Views

Views: 5,831

42. Calculate the magnitude of the force acting on electron moving with a velocity at right angles to a magnetic field of . [Electronic charge Ans. 43. Range of a milli-ammeter is . The resistance of the ammeter is . What is required to be done to change the meter to a voltmeter to read upto volt? [J.E.E. '05] [Ans. in series] 44. A magnet placed at an angle of with a uniform field of intensity 0:32 unit experiences a couple whose moment is 8 unit. Calculate the magnetic moment of the magnet. [H.S. '06] [Ans. 50 unit] 45. A current of produces deflection of in a tangent galvanometer. What current will produce a deflection of in the same galvanometer? 46. A tangent galvanometer is so designed that 5,50 or 500 turns can be used. A current of sent through 50 turns produces a deflection of . Find the deflection produced when the same current passes through (a) 5 turns, (b) 500 turns. 47. The radius of the coil of a tengent oalyanomoto. [Ans. (a) , (b) ]
Topic

Topic:

Magnetism, EMI and AC

View solution

Question 2
Views

Views: 5,142

70 Electromagnetic Induction Board \& Competitive Exams Example 4: A bar magnet is dropped through a horizontal aluminium ring along the axis of the ring. Wh be direction of induced current in the loop for the observer shown? What will be the direos. magnetic force experienced by the bar magnet?
Topic

Topic:

Magnetism, EMI and AC

View 2 solutions

Question 3
Views

Views: 5,840

Example 9.5: Two resistances and 3 ohm are connected across the two gaps of the metre bridge as shown in figure. Calculate the current through the cell when the bridge is balanced and the specific resistance of the material of the metre bridge wire. Given the resistance of the bridge wire is and its diameter is .
Topic

Topic:

Magnetism, EMI and AC

View solution

Question 4
Views

Views: 5,269

Explowation: on hot summex days the near the ground becomes hotter than the air at higher levels the refective index is increase with itis density.1 Hotrer air has uss density and smaller refecti index than the cool air. As a resuct light from the tall object. suct has a tree, passes through a medium where retractive index decrease towards the ground 1 Thus a ray of light from such obsect Successively bends away from the werman and undergoes total intrnal retectiong If the angle of indesity for the air Near the ground is more than crtical angle. (for a dastret observer the light appears to be coming from some wear below the Grnunde
Topic

Topic:

Optics

View solution

View more
Doubt Icon Doubt Icon

Stuck on the question or explanation?

Connect with our Physics tutors online and get step by step solution of this question.

231 students are taking LIVE classes

Related books for questions on Semiconductor Electronics: Materials, Devices and Simple Circuits

next icon
next icon

Previous year question papers

Question Text
Sunil and his parents were travelling to their village in their car. On the way his mother noticed some grey coloured panels installed on the roof of a low building. She enquired from Sunil what those panels were and Sunil told his mother that those were solar panels.
(a) What were the values displayed by Sunil and his mother ? State one value for each.
(b) In what way would the use of solar panels prove to be very useful ?
(c) Name the semiconductor device used in solar panels. Briefly explain with the help of a diagram, how this device works.
TopicSemiconductor Electronics: Materials, Devices and Simple Circuits
SubjectPhysics
ClassClass 12
Answer TypeText solution:1
Upvotes57