1 ) There are 3 bulbs of 600 W , 200 W , 300 W . Which bulb has thickest filament ?
A ) 200 W , B ) 300 W ,
C ) 600 W , D ) None of these ,
Correct Answer : - A ) 200 W ,
Because power is inversely proportional to thickness of a bulb . So less power , more thickness . And 200 W bulb has less power and more thickness .
2 ) The Earth rotates at a moderate angular velocity of ………… ( 7.29211 x 10^(-5) red/sec ) .
3 ) Maximum velocity of mass spring system is ………. ( v˳ = x˳ * √(k/m) ) .
4 ) Kinetic energy if electron in Coolidge tube is proportional to ………..
(Accelerating potential ) . K.E = ev .
5 ) The period of satellite in an orbit of radius R is T . So what will be time period , if radius is 4R ?
A ) increase by 2 times , B ) increase by 4 times ,
C ) increase by 8 times , D ) increase by 10 times ,
Correct Answer : - C ) increase by 8 times ,
Solution : -
6 ) If the tensile force is suddenly removed from a wire , then its temperature will …………. ?
A ) increased , B ) decrease ,
C ) no change , D ) None of these ,
Correct Answer : - A ) increased ,
7 ) Angle between the coil of 3 phase is ………. ?
A ) 0 degree , B ) 90 degree ,
C ) 120 degree , D ) 180 degree ,
Correct Answer : - C ) 120 degree ,
8 ) Real and virtual mass of a photon is zero .
9) The far point for normal eye is ……….. ( 25 cm ) .
Our eye can see 25 cm to infinity .
10 ) A particle executing SHM have maximum velocity at …….. ,
A ) mean position , B ) extreme position ,
C ) same at everywhere , D ) None of these ,
Correct Answer : - A ) mean position ,
11 ) Equation of continuity : - ρAV = ρʹAʹVʹ .
So , A/Aʹ = Vʹ/V ,
Now go to online quiz section and check your preparation by this link : -
 200 W , B ) 300 W , C ) 600 W , D ) None of these ,){kind=link}
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