Solved question paper for PHYSICS May-2025 (B-TECH 1st-2nd)

Solved Question Paper

Engineering physics May-2025

PTU • B-TECH • Mechanical Engineering • 1st-2nd • May-2025

engineering physics previous year question papers on BRpaper are organized for students of Punjab Technical University’s Bachelor of Technology program, 1st-2nd semester. This section makes it easier to browse subject-wise old question papers for engineering physics, so students can review how questions are typically framed in past exams and get a sense of the exam pattern. Many students search for engineering physics with answers pdf while preparing for exams, and this page is built to support exactly that kind of subject-wise browsing and revision. BRpaper is not the official website of Punjab Technical University or any institution, and it does not publish official notices or academic updates.

Solved Questions

Solved
  1. Write briefly : a. Calculate the minimum wavelength of Continuous X-rays emitted from an X-ray tube whose operating voltage is 40 kV.
    Very Short Answer 2 Marks May-2025 • PTU B-TECH
  2. Write briefly : b. Show that at 0 K, the probability to find electron in an energy level above the fermi level is Zero.
    Very Short Answer 2 Marks May-2025 • PTU B-TECH
  3. Write briefly : c. Why superconductors cannot carry current beyond a certain limit?
    Very Short Answer 2 Marks May-2025 • PTU B-TECH
  4. Write briefly : d. Distinguish between diamagnetic and paramagnetic materials.
    Very Short Answer 2 Marks May-2025 • PTU B-TECH
  5. Write briefly : e. Show that Divergence of Curl of vector is zero.
    Very Short Answer 2 Marks May-2025 • PTU B-TECH
  6. Write briefly : f. Distinguish between Stimulated emission and spontaneous emission.
    Very Short Answer 2 Marks May-2025 • PTU B-TECH
  7. Write briefly : g. Write a note on four level lasers.
    Very Short Answer 2 Marks May-2025 • PTU B-TECH
  8. Write briefly : h. What are Carbon Nanotubes (CNTs)?
    Very Short Answer 2 Marks May-2025 • PTU B-TECH
  9. An electron has a speed of 400 m/s, correct upto 0.01%, with what minimum accuracy, can you locate the electron?

    Short Answer 2 Marks May-2025 • PTU B-TECH


  10. Distinguish between splicers and couplers.
    Very Short Answer 2 Marks May-2025 • PTU B-TECH
  11. What is Bragg's law? Explain the measurement of crystal spacing (d) using Bragg's spectrometer.
    Long Answer 8 Marks May-2025 • PTU B-TECH
  12. Distinguish between intrinsic and extrinsic semiconductors. Derive the expression for carrier concentration in n-type semiconductors.
    Long Answer 8 Marks May-2025 • PTU B-TECH
  13. What is Meissner effect? Explain it using London's equation.
    Long Answer 8 Marks May-2025 • PTU B-TECH
  14. a. Write the Maxwell's equations and discuss the physical significance of each equation.
    Long Answer 8 Marks May-2025 • PTU B-TECH
  15. b. Define Poynting vector (\(\vec{P}\)). Show that \(\vec{P} = \langle \vec{E} \times \vec{H}\rangle\) where symbols have their usual meanings.
    Long Answer 8 Marks May-2025 • PTU B-TECH
  16. Explain the construction and working of Ruby laser with the help of energy level diagram. Explain why it is pulsed laser?
    Long Answer 8 Marks May-2025 • PTU B-TECH
  17. What are the various kinds of losses a light suffers while propagating through a fibre? Calculate the refractive index of core and clad of fibre where Numerical aperture is 0.40 and \(\Delta = 0.020\).
    Long Answer 8 Marks May-2025 • PTU B-TECH
  18. Solve time independent Schrodinger wave equation for particle in a box and show that energy of particle is quantized.
    Long Answer 8 Marks May-2025 • PTU B-TECH
  19. Explain the synthesis of nanomaterials using sol-gel techniques. Why it is called bottom to top approach?
    Long Answer 8 Marks May-2025 • PTU B-TECH

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01 Where can I find engineering physics previous year question papers for Bachelor of Technology, 1st-2nd semester?

This page lists engineering physics question papers uploaded for Punjab Technical University Bachelor of Technology, 1st-2nd semester, organized for subject-wise browsing where available.

02 Are these official Punjab Technical University question papers?

BRpaper is not the official website of Punjab Technical University. These papers are shared for reference and revision purposes only and are not official university material.

03 How can previous year engineering physics papers help in exam preparation?

Reviewing past papers can help you understand how questions are typically framed, notice commonly repeated topics, and get a sense of the exam pattern before your own exam.

04 What kind of topics does engineering physics usually cover?

The question papers here relate to the official engineering physics syllabus set by the university for this course and semester.

05 Does this page include a engineering physics with answers pdf or solved answers?

This page focuses on providing access to the previous year question papers themselves. A separate question bank or solved answers may not be available for every paper.

06 Can I find papers for other subjects in the same Bachelor of Technology?

Yes, BRpaper organizes papers by university, course, stream, and semester, so you can browse other subjects within the same Punjab Technical University Bachelor of Technology.