Which gas is filled in the electric bulb?

Question: Which gas is filled in the electric bulb?

A) Argon
B) Hydrogen
C) Nitrogen
D) Helium

Answer: Argon or Nitrogen or mixture of both

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Explanation: The presence of inert gases like argon, neon or nitrogen inside the bulb retards the evaporation of the filament and makes it possible to operate it at higher temperatures than in vacuum. Modern bulbs are usually filled with a mixture of argon and nitrogen. More rarely, some bulbs are filled with pure argon, krypton or xenon.

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A device which is used in our TV set, Computer, Radio set for storing the electric charge is

Question 46 A device which is used in our TV set, Computer, Radio set for storing the electric charge is

A) resistor
B) inductor
C) capacitor
D) conductor

Answer:  capacitor

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The Dynamo converts

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Question 79 The Dynamo converts

A) Electrical energy into Mechanical Energy
B) None of these
C) Mechanical energy into Electrical Energy
D) Mechanical Energy into Magnetic Energy

Answer: Mechanical energy into Electrical Energy

• SSC CGL EXAM 2016

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Electric current is measured using which of the following instrument?

Question 66 Electric current is measured using which of the following instrument?

A> Ammeter
B> Voltmeter
C> Anemometer
D> Wattmeter

Answer: Ammeter

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A wire of resitance R is cut into n equal parts

Post 296

SSC CHSL Questions 2014

Question 159 A wire of resitance R is cut into n equal parts. These parts are then connected in parallel. The equivalent resistance of the combination will be

A) nR

B) R/n

C) n/R

D) R/n2

Answer : R/n2

Explanation:  because when a wire is cut in two equal parts then the resistance of the combination comes to be R/4.

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Question 160 A bullet hits and gets embedded in a solid block resting on a horizontal frictionless table. Which physical quantity is conserved in this process?

A) Momentum and kinetic energy

B) Momentum alone

C) Kinetic energy alone

D) Neither momentum nor kinetic energy

Answer: Momentum alone

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If a wire of resistance R is melted and recast to half of its length, then the new resistance of the wire will be

Post 288

SSC CHSL Questions 2014

Question 197 If a wire of resistance R is melted and recast to half of its length, then the new resistance of the wire will be

A) R/4

B) R/2

C) R

D) 2R

Answer: R/2

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