Solved question paper for PHY Dec-2015 (DIPLOMA 1st-2nd)
Solved Question Paper
Physics Dec-2015
PSBTE • DIPLOMA • Information Technology • 1st-2nd • Dec-2015
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.
Solved Questions
Solved-
Velocity of light is maximum in __________.Fill in the Blanks 1 Marks Dec-2015 • PSBTE DIPLOMA
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For sustained interference two sources must be __________ sources.Fill in the Blanks 1 Marks Dec-2015 • PSBTE DIPLOMA
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Value of absolute permittivity of air is __________.Fill in the Blanks 1 Marks Dec-2015 • PSBTE DIPLOMA
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1 Volt is numerically equal to __________.Fill in the Blanks 1 Marks Dec-2015 • PSBTE DIPLOMA
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Forbidden energy band gap of Silicon (Si) is __________.Fill in the Blanks 1 Marks Dec-2015 • PSBTE DIPLOMA
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Electric current is vector quantity.True / False 1 Marks Dec-2015 • PSBTE DIPLOMA
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Dec 2016 Current is a vector quantity.
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To decrease the capacity of a parallel plate capacitor, a sheet of mica should be introduced between the plates.True / False 1 Marks Dec-2015 • PSBTE DIPLOMA
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Susceptibility is positive and large for ferromagnetic substances.True / False 1 Marks Dec-2015 • PSBTE DIPLOMA
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Ruby laser is solid state laser.True / False 1 Marks Dec-2015 • PSBTE DIPLOMA
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Holes are majority carriers in N type semiconductor.True / False 1 Marks Dec-2015 • PSBTE DIPLOMA
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The refractive index of glass with respect to air is 3/2. The refractive index of air with respect to glass is:MCQ 1 Marks Dec-2015 • PSBTE DIPLOMA
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Electric lines of force at negative point charge areMCQ 1 Marks Dec-2015 • PSBTE DIPLOMA
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Kirchhoff’s second law is based on law of conservation ofMCQ 1 Marks Dec-2015 • PSBTE DIPLOMA
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May 2019 Kirchhoff’s first law is based on the law of conservation of_________.
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Dec 2017
The electric Kirchhoff ’s second law is based on the law of conservation of _________
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When the conductivity of semiconductor is only due to breaking of covalent bonds then semiconductor is calledMCQ 1 Marks Dec-2015 • PSBTE DIPLOMA
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An electron can remain in excited state for aboutMCQ 1 Marks Dec-2015 • PSBTE DIPLOMA
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What is total internal reflection? Explain with diagram.Short Answer 5 Marks Dec-2015 • PSBTE DIPLOMA
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May 2024 Explain the phenomenon of total internal reflection. Give conditions for its observation.
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May 2023 What is total internal reflection? Explain in detail with diagram and examples.
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May 2021 What is total internal reflection? What are necessary conditions for total internal reflection?
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May 2020 What is total internal reflection? What are conditions for it.
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May 2019 Define total internal reflection. What are essential conditions for TIR?
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May 2018
What is total internal reflection (TIR)? Explain one of its applications.
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An astronomical telescope having magnifying power of 5 and length 24 cm consists of two lenses. Find the focal length of lenses.Short Answer 5 Marks Dec-2015 • PSBTE DIPLOMA
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State and prove Gauss law of electrostatics.Long Answer 5 Marks Dec-2015 • PSBTE DIPLOMA
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May 2023 State Gauss’s theorem. How is it useful in electrostatics?
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May 2021 State and prove Gauss law in electrostatics.
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May 2020 What is Gauss law in electrostatics?
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Capacitors of 4, 5 and 6µF are connected in series and in parallel. Compare the effective capacitances in two cases.Short Answer 5 Marks Dec-2015 • PSBTE DIPLOMA
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May 2024 Capacitors of 4, 5 and 6 µF are connected (i) in series and (ii) in parallel. Compare the effective capacitance in the two cases.
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What is Wheatstone bridge? Derive the condition for balanced Wheatstone bridge.Long Answer 5 Marks Dec-2015 • PSBTE DIPLOMA
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Explain the conversion of galvanometer into ammeter. Why ammeter is always connected in series in circuits.Long Answer 5 Marks Dec-2015 • PSBTE DIPLOMA
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Dec 2011 Explain how a galvanometer can be converted into an ammeter. Why is an ammeter always connected in series?
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Differentiate between intrinsic and extrinsic semiconductors.Short Answer 5 Marks Dec-2015 • PSBTE DIPLOMA
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May 2023 Differentiate between intrinsic and extrinsic type semiconductors.
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May 2021 Differentiate between Intrinsic and extrinsic semiconductor. Give five differences.
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May 2020 Distinguish between P-type and n-type semiconductors.
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May 2019 Differentiate between intrinsic and extrinsic semiconductors.
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May 2018
a) Differentiate between n-type and p-type semiconductors.
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Dec 2018 Differentiate between N-type and P-type semiconductors.
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May 2017
Differentiate between intrinsic and extrinsic type semiconductors.
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May 2016 Differentiate between N-Type and P-Type semiconductors.
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Dec 2016 Differentiate between intrinsic and extrinsic semiconductor.
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Dec 2016 Differentiate between N-type and P-type semiconductor.
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May 2015 Differentiate between N-type and P-type semiconductors.
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Find the force acting on an electron moving with velocity 10^7 m/sec in magnetic field of 10^-4 Tesla perpendicular to it.Short Answer 5 Marks Dec-2015 • PSBTE DIPLOMA
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May 2019 Find the force acting on an electron moving with velocity 10 7 m/s in magnetic field of 10 -4 Tesla perpendicular to it.
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Dec 2018 Find the force acting on an electron moving with velocity 10^7 m/s in magnetic field of 10^-4 tesla perpendicular to it.
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With the help of labeled diagram explain the construction and working of compound microscope and find its magnifying power.Long Answer 7 Marks Dec-2015 • PSBTE DIPLOMA
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May 2024 With the help of suitable ray diagram, explain the construction and working of compound microscope. Also define its magnifying power with formula.
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May 2016 With the help of labeled diagram explain the construction and working of simple microscope and find its magnifying power.
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You are given four lenses of focal lengths 30 cm, 20 cm, 8 cm and 2 cm. Which two would you prefer for compound microscope and why?Short Answer 3 Marks Dec-2015 • PSBTE DIPLOMA
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Derive an expression for electric field intensity due to long charged straight conductor.Long Answer 7 Marks Dec-2015 • PSBTE DIPLOMA
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May 2020 Define electric field intensity. Derive expression for electric field due to a straight charged conductor.
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Dec 2017
Derive an expression for electric field intensity due to a charged straight conductor.
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A charge of 4µC is placed in an electric field of intensity 50×10^5 N/C. What is the magnitude of force acting on the charge?Short Answer 3 Marks Dec-2015 • PSBTE DIPLOMA
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May 2019 A charge of 4 µC is placed in an electric field of intensity 50 x 10 5 N/C. What is the magnitude of force acting on the square?
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May 2015 A charge of 4 µC is placed in an electric field of intensity 50 × 10^5 N/C. What is the magnitude of the force acting on the charge?
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Derive an expression for the force acting on a current carrying conductor placed in magnetic field.Long Answer 7 Marks Dec-2015 • PSBTE DIPLOMA
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May 2020 What is Lorentz force? Derive expression for force on a conductor carrying curtrent placed in magnetic field.
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A current carrying conductor is placed in magnetic field. Find the angle between current and magnetic field when force acting on the conductor is maximum and minimum.Short Answer 3 Marks Dec-2015 • PSBTE DIPLOMA
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What is Rectifier? Explain full wave bridge rectifier with diagram.Long Answer 10 Marks Dec-2015 • PSBTE DIPLOMA
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May 2023 Explain the working half wave and full wave rectifier with diagram.
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May 2021 Explain full wave bridge rectifier.
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Dec 2017
Explain full- wave bridge rectifier working with circuit and wave diagrams in detail.
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May 2016 What is Rectifier? Explain half wave rectifier with diagram.
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Dec 2016 Explain the working of full bridge rectifier with help of diagram.
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Dec 2011 Explain with the help of diagram fullwave bridge rectifier in detail.
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What is Laser? Explain He-Ne laser with diagram.Long Answer 10 Marks Dec-2015 • PSBTE DIPLOMA
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May 2016 What is Ruby and He-Ne laser? Explain both with diagrams.
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FAQ
Frequently Asked Questions
Answers about this subject, solved papers, and preparation.
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.