Mechanics
What is the SI unit of force? a) Newton (N) b) Joule (J) c) Watt (W) d) Kilogram (kg)
a) Newton (N)
What is the SI unit of electric charge? a) Volt (V) b) Ampere (A) c) Coulomb (C) d) Ohm (Ω)
c) Coulomb
What is the SI unit of temperature? a) Celsius (°C) b) Kelvin (K) c) Fahrenheit (°F) d) Joule (J)
b) Kelvin (K)
What is the phenomenon that causes the apparent bending of light waves when they pass from one medium to another? a) Reflection b) Refraction c) Diffraction d) Dispersion
b) Refraction
Which of the following represents Newton's second law of motion? a) F = ma b) F = mv c) F = m/a d) F = mv^2
a) F = ma
What does Ohm's law state? a) V = IR b) I = VR c) R = VI d) V = RI
a) V = IR
What does the first law of thermodynamics state? a) Energy cannot be created nor destroyed b) Entropy always increases in an isolated system c) Heat flows from hot to cold d) Work done is equal to the change in internal energy of a system
a) Energy cannot
What is the correct order of colors in a rainbow from outer to inner? a) Red, Orange, Yellow, Green, Blue, Indigo, Violet b) Violet, Indigo, Blue, Green, Yellow, Orange, Red c) Red, Yellow, Green, Blue, Indigo, Violet d) Red, Orange, Yellow, Green, Blue, Violet
a) Red, Orange, Yellow, Green, Blue, Indigo, Violet
What is the unit of work done in the SI system? a) Newton (N) b) Watt (W) c) Joule (J) d) Dyne (dyn)
c) Joule (J)
Which of the following statements is true about electromagnetic waves? a) They require a medium to propagate b) They travel at the speed of sound c) They are transverse waves d) They have only electrical fields
c) They are transverse waves
Which law of thermodynamics states that energy cannot be created or destroyed, only transformed from one form to another? a) Zeroth Law b) First Law c) Second Law d) Third Law
b) First Law
What type of lens converges light rays to a single point? a) Convex lens b) Concave lens c) Biconvex lens d) Plano-convex lens
a) Convex lens
What is the formula for kinetic energy? a) KE = 1/2mv^2 b) KE = mgh c) KE = Fd d) KE = mg
a) KE = 1/2mv^2
What is the formula to calculate the capacitance of a capacitor? a) C = Q/V b) C = V/Q c) C = Q/I d) C = I/Q
a) C = Q/V
What is the specific heat capacity of water? a) 1 J/kg°C b) 4.18 J/kg°C c) 10 J/kg°C d) 2.5 J/kg°C
b) 4.18 J/kg°C
What is the phenomenon responsible for the blueness of the sky? a) Reflection b) Refraction c) Diffraction d) Rayleigh scattering
d) Rayleigh scattering
Which of the following is a scalar quantity? a) Force b) Velocity c) Acceleration d) Work
d) Work
What phenomenon occurs when a charged object induces a charge in a nearby neutral object without direct contact? a) Electromagnetic induction b) Conduction c) Induction d) Capacitance
c) Induction
What is the efficiency of a Carnot engine operating between two heat reservoirs at temperatures Th and Tc? a) (Th - Tc) / Th b) (Th - Tc) / Tc c) (Th / Tc) d) (Tc / Th)
a) (Th - Tc) / Th
What is the principle behind the operation of a laser? a) Spontaneous emission b) Stimulated emission c) Absorption of light d) Refraction
b) Stimulated emission