Physics - Section 2
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Welcome to Online General Knowledge section in LearnFrenzy, which is important for SSC, UPSC, Civil Service exams and other competitive exams. We have created Some questions related to General Science(Physics) !!!
The dyne is a unit of force specified in the centimetre–gram–second system of units (CGS), a predecessor of the modern SI. One dyne is equal to 10−5 N
The Remote Sensing Device (RSD) is a unique system that enables to measure individually the emissions of vehicles in motion, it has an inbuilt source of Infrared Ray.
Hypermetropia Myopia is corrected by spectacles having concave lens.Near point of a person suffering from hypermetropia is more than 25cm.
A supersonic aircraft is an aircraft able to fly faster than the speed of sound (Mach number 1).
Cryogenics is the study of the production and behaviour of materials at very low temperatures.
The main attribute common to all lightning rods is that they are all made of conductive materials, such as copper and aluminum. Copper and its alloys are the most common materials used in lightning protection
The Mosquito or Mosquito alarm is an electronic device used to deter loitering by young people by emitting sound at high frequency.
Doubling the length will double the resistance, but the wire also must get thinner as it is stretched, because it will contain the same amount of metal in twice the length.
The air bubble will act as a concave lends as light rays exiting the bubble will diverge like they do in a concave lens.
Fuses and breakers limit the current which can flow in a circuit