Solved question paper for PHY Dec-2017 (DIPLOMA 1st-2nd)

Solved Question Paper

Physics Dec-2017

PSBTE • DIPLOMA • Cvil Engineering • 1st-2nd • Dec-2017

PHY is the Physics subject for Punjab State Board of Technical Education Diploma in Engineering 1st-2nd semester students who want subject-wise previous year question papers. On this page, students can look for old papers in a semester-wise format to understand exam pattern questions, revision topics, and commonly repeated units before the exam. Use these PHY papers to practice important questions, check how Physics is asked in diploma exams, and revise faster from previous year question papers. BRpaper is not the official website of Punjab State Board of Technical Education or any board/university, and it only helps students find exam preparation material.

Question papers (year-wise) Solutions

Solved Questions

Solved

SECTION-A

Q1. a) Fill in the blanks.

i. Field inside a spherical shell of uniform charge density is _________

Very Short Answer 10x1=10 Marks Dec-2017 • PSBTE DIPLOMA

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The field of view of a ________ mirror is maximum.

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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A convex lens has a focal length of 10 cm., then its magnifying power is ________

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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The electric Kirchhoff ’s second law is based on the law of conservation of _________

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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May 2019 Kirchhoff’s first law is based on the law of conservation of_________.

Dec 2015 Kirchhoff’s second law is based on law of conservation of

Refractive index of Cladding is_______ than refractive index of core in an optical fiber.

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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State True or False.

vi. Total internal reflection will not take place, when light ray travels from denser to rarer medium.

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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Electric potential is a vector quantity.

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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Dec 2016 Electric charge is a vector quantity.
The capacitance of a parallel plate capacitor increases by the introduction of a dielectric slab between its plates.

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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Two parallel conductors carrying currents in opposite direction will attract each other.

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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In a transistor, the collector-base junction must be reverse biased.

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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Multiple Choice Questions.

i. The focal length of a concave lens is 20 cm. What is its power?

(a) + 20 D (b) – 20 D (c) – 5 D (d) + 5 D

Very Short Answer 5x1=5 Marks Dec-2017 • PSBTE DIPLOMA

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The capacitance of a parallel plate capacitor does not depend upon the

(a) Material of the plates (b) Medium between the plates (c) Area of the plates (d) distance between the plates

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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Kilo watt hour is the unit used for measuring

(a) Electric current (b) Electric Power (c) Electric Potential (d) Electric Energy

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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Fleming’s Right Hand rule is applied to find the direction of?

(a) Electric field (b) Current (c) Magnetic field (d) Magnetic force

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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Laser is based on the principle of

(a) Stimulated absorption (b) Spontaneous emission (c) Stimulated emission (d) all of above

Very Short Answer Dec-2017 • PSBTE DIPLOMA

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SECTION-B

Q2. Attempt any six questions.

a. A needle placed 45 cm from a lens, forms an image on a screen placed 90 cm on the other side of the lens. Identify the type of lens and determine its focal length. What will be the size of the image, if the size of needle is 5.0 cm?

Short Answer 6x5=30 Marks Dec-2017 • PSBTE DIPLOMA

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Derive an expression for electric field intensity due to a charged straight conductor.

Short Answer Dec-2017 • PSBTE DIPLOMA

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May 2020 Define electric field intensity. Derive expression for electric field due to a straight charged conductor.

Dec 2015 Derive an expression for electric field intensity due to long charged straight conductor.
Explain how will you convert a galvanometer into a voltmeter

Short Answer Dec-2017 • PSBTE DIPLOMA

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May 2023 Explain that how a galvanometer can be changed into a voltmeter?

May 2020 How will you convert galvanometer into ammeter? Explain.

Dec 2018 Explain how a galvanometer can be converted into a voltmeter of given range?

May 2015 Show how will you change a galvanometer into ammeter.
What is three level laser and four level laser? Explain with diagrams.

Short Answer Dec-2017 • PSBTE DIPLOMA

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Dec 2011 What do you mean by three level laser? Explain.
Explain the effect of temperature on the conductivity of intrinsic semi conductors.

Short Answer Dec-2017 • PSBTE DIPLOMA

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Why the width of depletion layer decreases on forwarding biasing of pn-junction diode.

Short Answer Dec-2017 • PSBTE DIPLOMA

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What are single-mode and multi-mode optical fibers? Explain with diagrams.

Short Answer Dec-2017 • PSBTE DIPLOMA

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Dec 2017
a) What is optical fiber? Explain various applications of optical fibers.
Define the following :

(a) Knee Voltage (b) depletion Region (c) Potential barrier

Short Answer Dec-2017 • PSBTE DIPLOMA

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SECTION-C

ttempt any three questions.

Q3. What is astronomical telescope? Explain its construction and working. Find an expression for its magnifying power.

Long Answer 10x3=30 Marks Dec-2017 • PSBTE DIPLOMA

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What is Wheat stone bridge principle? Explain with diagram how it is used to calculate unknown resistance?

Long Answer Dec-2017 • PSBTE DIPLOMA

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Explain full- wave bridge rectifier working with circuit and wave diagrams in detail.

Long Answer Dec-2017 • PSBTE DIPLOMA

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May 2023 Explain the working half wave and full wave rectifier with diagram.

May 2021 Explain full wave bridge rectifier.

May 2016 What is Rectifier? Explain half wave rectifier with diagram.

Dec 2016 Explain the working of full bridge rectifier with help of diagram.

Dec 2015 What is Rectifier? Explain full wave bridge rectifier with diagram.

Dec 2011 Explain with the help of diagram fullwave bridge rectifier in detail.
a) What is optical fiber? Explain various applications of optical fibers.

Long Answer 7 Marks Dec-2017 • PSBTE DIPLOMA

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Dec 2017
What are single-mode and multi-mode optical fibers? Explain with diagrams.
What is doping? How extrinsic semi-conductors are made with doping?

Long Answer 3 Marks Dec-2017 • PSBTE DIPLOMA

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a) What is principle of a parallel plate capacitor? Describe the various factors affecting the capacity of a capacitor? Explain

Long Answer 6 Marks Dec-2017 • PSBTE DIPLOMA

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May 2024 Define a capacitor. What are the factors affecting its capacitance?

May 2020 What are factors affecting capacitance of a capacitor.

Dec 2016 What are the factors affecting the capacity of a capacitor?

May 2015 What are the factors affecting the capacity of a capacitor?
Differentiate between paramagnetic, diamagnetic and ferromagnetic materials.

Long Answer 4 Marks Dec-2017 • PSBTE DIPLOMA

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May 2024 Differentiate between dia, para and ferromagnetic materials.

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FAQ

Frequently Asked Questions

Answers about this subject, solved papers, and preparation.

Updated regularly

01 Where can I find PHY previous year question papers for PSBTE Diploma?

You can use this subject page to find PHY subject-wise previous year question papers for the PSBTE Diploma in Engineering 1st-2nd semester.

02 Are PHY question papers available as PDF?

This page is meant to help students look for PHY question paper PDFs and other old paper resources, if available.

03 Can I use PHY old papers for exam preparation?

Yes, PHY previous year papers are useful for revision, understanding the exam pattern, and spotting repeated question styles.

04 Does this page provide solved PHY papers?

Students often search for solved papers, but availability may vary. This page focuses on PHY previous year question papers and exam preparation material.

05 What is the benefit of studying PHY PYQ papers?

PHY PYQ papers help you revise important topics, identify commonly asked units, and prepare more confidently for the exam.

Solved question paper for PHY Dec-2017 (DIPLOMA 1st-2nd)

Physics Dec-2017

Solved Questions

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