PES SS 1 Physics (Theory) 3rd Term Exam 2025-2026
- 1. Answer Question 1 and any other 3 questions.
1. (a) State Boyle's Law and Charles' Law.
(4 marks)
(b) A gas has a volume of 100 cm³ at 27°C. It is heated until its volume becomes 120 cm³. Find the new temperature T.
(6 marks)
- 2. 2. (a) State the Law of Flotation. (2 marks)
(b) State 2 applications of law of flotation. (4 marks)
(c) Mention 2 properties of fluid. (4 marks)
- 3. 3. (a) Define surface tension and mention three factors on which surface tension depends. (5 marks)
(b) State Archimedes' Principle. (3 marks)
(c) List two methods by which surface tension of a liquid can be reduced. (2 marks).
- 4. 4. (a) Define projectile motion. (2 marks)
(b) Explain the terms:
i. Time of flight
ii. Maximum height
iii. Range (6 marks)
(c) State two examples of projectile. (2 marks)
- 5. 5. (a) What is Simple Harmonic Motion (SHM)? (3 marks)
(b) State the 2 factors that affect SHM. (3 marks)
(c) Mention 2 examples of SHM systems. (4 marks)
- 6. 6. (a) State the General Gas Law with its mathematical expression. (4 marks)
(b) State two assumptions of the kinetic theory of gases. (2 marks)
(c) Define the following terms:
i. Wavelength
ii. Frequency
iii. Amplitude
iv. Wave velocity (4 marks)
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