Q1. Assertion: The kinetic energy of an object depends on its mass and velocity.
Reason: KE = ½ mv².

Q2. Assertion: The pressure at a point in a liquid increases with depth.
Reason: Pressure = ρgh.

Q3. Assertion: Light travels faster in air than in water.
Reason: Optical density of water > air.

Q4. Assertion: The frequency of a wave is inversely proportional to its time period.
Reason: f = 1/T.

Q5. Assertion: Ohm’s law is valid only at constant temperature.
Reason: Resistance varies with temperature.

Q6. Assertion: Magnetic field lines form closed loops.
Reason: Magnetic monopoles do not exist.

Q7. Assertion: Convex lens can produce both real and virtual images.
Reason: Image nature depends on object position.

Q8. Assertion: Total energy in a conservative system remains constant.
Reason: No energy is lost, only transformed.

Q9. Assertion: Electric current produces heating effect.
Reason: Power dissipated P = I²R.

Q10. Assertion: Terminal velocity is constant for free-falling object.
Reason: Drag force equals weight at terminal speed.