Latest Physics Questions | Physics Questions and Answers for SSC CGL 2024 & other Competitive Exams. Part – 6.
Hello Friends, We are sharing with you One Liners Physics Questions and Answers. This is veritably helpful for various competitive exams like SSC CGL, CHSL, MTS, RRB, DMRC, UPSC & other competitive examinations.
Physics Questions for SSC CGL 2024:
251. Why the outside of the bottom of cooking utensils is left black –
To absorb more heat & get heated quickly.
Important Takeaway for Competitive Exams:
The black surface absorbs more heat.
252.Gas thermometers are more sensitive to the weight of liquid thermometers, because-
gas expands much more than liquid on changing the temperature.
253.What is a white and smooth surface –
bad absorber of heat and good reflector of heat.
254.At what fraction of centigrade and Fahrenheit temperature are uniform –
- 40
255.What material is used in electric heater –
nichrome
Important Takeaway for Competitive Exams:
Nichrome is the alloy of the Nickel and chromium, in this alloy the nickel is 80% & the chromium is 20%. So, this alloy is called nichrome.
256.The device for converting transformer is-
Low voltage AC.in High voltage AC.
Important Takeaway for Competitive Exams
Transformer invented by Otto Blathy & Karoly Zipernowsky.
257.The term 'Higgs Boson' is related to-
God particle
258.If the electrical resistance is to be reduced, then the number of resistors should be connected to –
parallel
259.Which is not an electromagnetic wave –
Cathode ray
260.Diamond does not conduct electricity because-
it does not have an independent electron or ions.
261.What is the anti-particle of electron –
positron
262.Who is associated with the current carrying conductor –
electromagnetic field
263. Nuclear detonation is induced by-
uncontrolled chain reaction
264. What is the adverse effect of emission of X -rays –
Light - Electrical effect
265.What is called a group of solar cells that are folded together in a certain pattern –
solar cell panels
266.What is a choke used with tubelight-
effector
Important Takeaway for Competitive Exams:
The main purpose is to provide a high voltage initially between the filaments.
267.Which transistor is most likely to be in-
Audio equipment
Important Takeaway for Competitive Exams:
Transistor was invented by John Bardeen, Walter Brattain & William Shockley.
268.With whom a galvanometer can be connected and made into a voltmeter –
high resistance in series
Important Takeaway for Competitive Exams
Galvanometer was invented by Luigi Galvani.
269.Fleming's 'left hand rule' is related to-
magnetic field on the current
Important Takeaway for Competitive Exams
Developed by John Ambrose Fleming.
270.Sill-frequency –
frequency under which light electrical emission is not possible.
271.Super conductors are materials that give-
minimum resistance to the flow of electric current.
Important Takeaway for Competitive Exams
Examples of Superconductors are: Aluminium, Niobium, Magnesium Diboride, Cuprates & Iron Particles.
272.In a conductor –
the valence band and conduction band overlap each other.
273.The electrical resistance of some materials is completely eliminated at very low temperatures. What are these materials called –
superconductors
274.Dynamo converts it –
mechanical energy into electrical energy
Important Takeaway for Competitive Exams:
Dynamo is invented by Michael Faraday.
275.A fuse wire is identified due to these characteristics-
minimum resistivity and minimum melting point
276. When the number of the coil in a horoscope is tripled without any change in the length of the coil, how much is its inductance –
9 times
277.In electronics what comes under tank circuit –
Inductor and capacitor
278.Tungsten is used to make the filament of an electric bulb, because-
its melting point is very high.
279.Polymeter is used to measure –
current, voltage, resistance
280.A nuclear reactor used for power generation is based on-
nuclear fission.
281.A kilowatt-hour is a unit of-
energy.
282.In our domestic electrical circuit the fuse melts when there is a huge surge –
in the current
283.The instrument used to change the speed of electric fan is –
Regulator
284.Superconducting is the conductor which has-
zero resistance
285.Which device is used to limit current in electrical circuit-
Fuse wire.
Important Takeaway for Competitive Exams:
Fuse Wire invented by Thomas Edison in 1890.
286.Water cannot be used to extinguish a fire caused by electric current, because –
it can cause electric shock.
287.Produces dynamic electrical charge –
magnetic field
288.The SI unit of electric charge is-
Coulomb
289. Safety fuse wire used in household electrical appliances is made of a metal whose-
melting point is very low.
290.For electromagnetic radiation, make the correct configuration in the order of their increased frequency –
X-rays, infrared, visible, microscopic waves.
291.Whose unit is "ferred" –
of capacity
292.What is the nature of photon particle formation –
light effect
293.The level of incompatibility of an electrolyte depends on-
Tanuta
294.Electric fuse is an alloy of-
tin & lead.
295.What is a conductor wire –
neutral
296.What is the unit of electrical conductivity-
ohm
297.What is the conductor when carrying current –
negatively charged
298.What is the unit of sound pollution –
decibel
299.Sound height depends on-
amplitude of sound wave.
300.Which property of sound changes due to change in temperature of air –
wavelength
List of Battles in Indian History.
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