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FPSC · CSS 2025

Physics, Paper II

100 marks · 3 hours · 5 questions · official PDF, 2 pages
Practice 20 MCQs
This paper Physics · all yearsQ. 2a · Discuss the spectral properties of…Q. 4a · In the context of nuclear…Q. 5a · Derive the expression for electric…Q. 7a · Explain the construction and working…Q. 8 · Write short notes any TWO…With this paperPart-I MCQs20Official PDF2 pp← 20252026 →
3 hours · questions hide until you reveal them

Part II

Q. 2a

Discuss the spectral properties of perfect black body radiation. Explain the ultra violet catastrophe.

(10)
Q. 4a

In the context of nuclear physics explain the magic numbers.

(10)
Q. 5a

Derive the expression for electric dipole moment. Discuss two uses in modern science.

(10)
Q. 7a

Explain the construction and working of photo multiplier tube (PMT).

(10)
Q. 8

Write short notes any TWO of the following:

  1. (a)Reduced mass correction in spectroscopy [10]
  2. (b)Electron microscope [10]
  3. (c)Heisenberg uncertainty principal [10]
(20)

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About this paper

The 2025 CSS Physics paper set by the Federal Public Service Commission. Question wording only; questions marked “Not yet checked” have not been compared with the official paper yet. Open the official paper beside the questions to check any of them.

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