Which material has the highest specific heat capacity ? A. Iron B. Water C. Aluminum D. Mercury Answer: B (Water, ( \approx 4200 , \text{J kg}^{-1} \text{°C}^{-1} )) Contoh Soalan Esei: In an experiment, 2 kg of water at 30°C is heated by a 500 W immersion heater for 10 minutes. Calculate the final temperature of the water. (Specific heat capacity of water = ( 4200 , \text{J kg}^{-1} \text{°C}^{-1} )) Solution: ( Q = mc\Delta\theta \rightarrow Pt = mc\Delta\theta ) → ( 500 \times 600 = 2 \times 4200 \times \Delta\theta ) → ( \Delta\theta = 35.7°C ) → Final temp = 65.7°C. 5. Waves Topic Focus: Transverse/longitudinal waves, wave equation, reflection, refraction, diffraction, and interference (water, sound, light).
A wave has a frequency of 50 Hz and a wavelength of 0.2 m. Calculate the wave speed. Solution: ( v = f\lambda = 50 \times 0.2 = 10 , \text{m/s} ) Contoh Soalan Esei (SPM-style): Diagram shows two coherent sources of water waves producing interference pattern. Explain why alternating constructive and destructive interference occurs. How does increasing frequency affect fringe spacing? 6. Light and Optics Topic Focus: Reflection (plane/curved mirrors), refraction (Snell’s law), total internal reflection, lenses (convex/concave), and optical instruments. contoh soalan fizik tingkatan 4
Form 4 Physics is the foundation for understanding the physical principles of the universe. The syllabus is structured around key themes: measurement, motion, forces, heat, waves, light, and optics. Mastering sample questions from each topic is crucial for SPM success. Which material has the highest specific heat capacity
A car accelerates from rest at ( 2 , \text{m/s}^2 ) for 5 seconds. What is its final velocity? A. ( 2 , \text{m/s} ) B. ( 5 , \text{m/s} ) C. ( 10 , \text{m/s} ) D. ( 25 , \text{m/s} ) Answer: C (( v = u + at = 0 + 2 \times 5 = 10 , \text{m/s} )) Contoh Soalan Esei (Essay): Explain why a passenger in a moving car lurches forward when the car suddenly stops. How does a seatbelt reduce the risk of injury? (Key points: Inertia – body continues moving forward due to Newton’s First Law. Seatbelt increases stopping time, reducing impulsive force according to ( F = \frac{\Delta p}{\Delta t} )) 3. Gravitation Topic Focus: Newton’s law of gravitation, gravitational field strength, weight, and satellites. Water C