Q1. Assertion (A): Electric current flows from higher potential to lower potential.
Reason (R): Electric current is the flow of electrons.

Q2. Assertion: Resistance of a conductor increases with increase in temperature.
Reason: Increase in temperature increases collisions between electrons and atoms.

Q3. Assertion: Image formed by a plane mirror is virtual.
Reason: Reflected rays actually meet behind the mirror.

Q4. Assertion: A convex lens can form a real image.
Reason: Convex lens converges light rays.

Q5. Assertion: Sound cannot travel in vacuum.
Reason: Sound requires a material medium for propagation.

Q6. Assertion: Speed of light is maximum in vacuum.
Reason: Light faces no medium resistance in vacuum.

Q7. Assertion: Fuse wire has low melting point.
Reason: Fuse wire is made of thin alloy of tin and lead.

Q8. Assertion: Concave mirror can form a real image.
Reason: Concave mirror converges light rays.

Q9. Assertion: Electric power is work done per unit time.
Reason: Power P = VI.

Q10. Assertion: Electric energy is measured in kWh.
Reason: kWh is unit of electric power.