Physics Quiz ChallengeOnline version Test your knowledge of physics with these challenging questions! by ALHATMI , 1 a 50 b 54 c 60 d 64 2 What is the unit of force in the International System of Units? a Joule b Newton c Watt d Pascal 3 What is the speed of light in a vacuum? a 1,000,000 km/s b 150,000 km/s c 300,000 km/s d 299,792 km/s 4 What is the principle behind Archimedes' principle? a Gravity b Buoyancy c Momentum d Inertia 5 What is the formula for kinetic energy? a KE = 1/2 mgh b KE = mv c KE = mgh d KE = 1/2 mv² 6 What does the symbol 'c' represent in physics? a Speed of sound b Charge c Capacitance d Speed of light 7 What is the law of conservation of energy? a Energy is infinite b Energy can be destroyed c Energy can be created d Energy cannot be created or destroyed 8 What is the gravitational force between two masses directly proportional to? a Distance between them b Sum of their masses c Speed of light d Product of their masses 9 What is the term for the resistance of an object to change its state of motion? a Acceleration b Velocity c Inertia d Momentum 10 What is the phenomenon of light bending as it passes through different mediums called? a Refraction b Dispersion c Reflection d Diffraction 11 What is the SI unit of electric current? a Watt b Volt c Ohm d Ampere