Few Physics Concepts for Foundation Exams | Flashcards + Quiz

🧠 Few Must-Know Physics Concepts

🏃 Motion

Change in position of an object over time

📏 SI Unit of Force

Newton (N)

🔁 Newton's Third Law

Every action has an equal and opposite reaction

🧠 Dropdown Quiz: Select the Right Answer

1. What is the SI unit of Pressure?

-- Choose an answer -- Pascal Joule Watt

2. What does a spring balance measure?

-- Choose an answer -- Mass Volume Force

3. Which of the following is a scalar quantity?

-- Choose an answer -- Velocity Acceleration Speed

4. What is the acceleration due to gravity on Earth?

-- Choose an answer -- 9.8 m/s² 6.67 m/s² 3.0 m/s²

5. Unit of Work in SI system is?

-- Choose an answer -- Watt Joule Newton

6. A body is said to be in uniform motion if:

-- Choose an answer -- It moves with changing speed It covers equal distances in equal time intervals It remains stationary

7. Which instrument is used to measure atmospheric pressure?

-- Choose an answer -- Thermometer Barometer Manometer

8. Kinetic energy depends on:

-- Choose an answer -- Mass only Velocity only Both mass and velocity

9. What is the direction of buoyant force?

-- Choose an answer -- Downward Upward Sideways

10. A freely falling body has:

-- Choose an answer -- Uniform velocity Decreasing speed Uniform acceleration

⚡ Shortcut Tips

• ✅ Use “VIR” triangle to remember Ohm’s Law (V = IR)
• ✅ Work = Force × Distance → if no movement, Work = 0!
• ✅ Acceleration = (Final - Initial velocity) / Time
• ✅ Use the triangle: W = F × d for Work calculations. If distance = 0, work = 0!
• ✅ Remember: Speed = Distance / Time → Always keep the units consistent.
• ✅ Area under a speed-time graph = Distance travelled
• ✅ Power = Work / Time. If no work is done, power = 0
• ✅ Use "mass × gravity" for Weight (W = m × g), where g = 9.8 m/s²
• ✅ 1 Newton = Force needed to give 1 kg mass an acceleration of 1 m/s²
• ✅ Free fall → Acceleration = g, Velocity = g × t, Distance = ½ g × t²
• ✅ In buoyancy: If weight < upthrust → object floats; if weight > upthrust → it sinks!

The Physics Next| Shaleen Shekhar