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.
Suitable impurities are added to a semiconductor depending on its use. This is done in order to
increase its life
enable it to withstand higher voltages
increase its electrical conductivity
increase its electrical resistivity
Correct answer is C
No explanation has been provided for this answer.
mercury is a metal
density of mercury is greater than that of water
cohesion of mercury is greater than its adhesion with glass
cohesion of water is greater than its adhesion with glass
Correct answer is C
No explanation has been provided for this answer.
Sound of frequency below 20 Hz is called
audio sounds
infrasonic
ultrasonic
supersonics
Correct answer is B
No explanation has been provided for this answer.
locating submerged submarines
receiving signals in a radio receiver
locating geostationary satellites
detecting and locating the position of objects such as aeroplanes
Correct answer is D
No explanation has been provided for this answer.
Materials for rain-proof coats and tents owe their water-proof properties to
surface tension
viscosity
specific gravity
elasticity
Correct answer is A
No explanation has been provided for this answer.