Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
What type of electromagnetic radiation can be used to take photographs in the haze?
Radio waves
infrared rays
Visible light
Gamma rays
Correct answer is B
Infrared rays are easily detected by special photographic films and it can be used for taking picture in haze
Lodestone is a natural magnet, it points at
N – W when suspended freely
N–S when suspended freely
S – E when suspended freely
S–W when suspended freely
Correct answer is B
Lodestone is a natural magnet it points approximate at N – S when suspended freely
Quantities of heat Q can be measured using a container called
Thermometer
Measuring cylinder
Calorimeter
Meter rule
Correct answer is C
Calorimeter is an apparatuses used for measuring the heat (Q) generated or absorbed by change of phase (state) or other physical change
Heat transfer in the surrounding without a material medium is possible through?
Conduction
Convection
Radiation
Expansion
Correct answer is C
Conduction, convection of heat or electricity through a material medium is required but radiation requires no material medium for heat transfer
Electromagnetic devices
Magnetic relay device
None at all
Sextant
Correct answer is B
Magnetic relay device :is the device that controls a circuit (i.e one circuit )if a current in the second circuit is large or dangerous