1 ) If the water fall from a dam to turbine wheel 19.6 m below , then velocity of water at turbine is ?
A ) 11.8 m/s
, B ) 15.0 m/s ,
C ) 19.6 m/s
, D ) None of these ,
Correct
Answer : - C ) 19.6 m/s ,
Solution
: -
Formula
: -
v =
√(2gh) = √(2 x 9.8 x 19.6) = 19.6
m/s ,
Answer .
2 )
As Beroulli's equation , pressure is . . . . . . . . . . . . . . to the
velocity .
A ) directly proportional ,
B ) inversely proportional ,
C ) equal to ,
D ) None of these ,
Correct
Answer : - B ) inversely proportional ,
3
)Two pipes if radius of 2 cm and 4 cm , the ratio of velocity , V1 / V2 = ?
A ) 2 , B ) 4 ,
C ) 8 , D ) None of these ,
Correct Answer : - B ) 4 ,
Solution : -
4 )
A Beam of light travel to rare medium from denser medium , then it suffers
phase angle of : -
A ) 90 degree , B
) 180 degree ,
C ) 270 degree , D
) None of these ,
Correct
Answer : - B ) 180 degree ,
5 )
Density of water is . . . . . . . . . ( 997 kg / m³ or 1000 kg / m³ ) .
6 )
A stone I release from train , so it will follow . . . . . . . . ( projectile
motion ) and hit the ground .
7 )
To hear echo the minimum distance of reflecting surface must be : - 17.2 m ,
8 )
Escape velocity of earth is ...... 11.2
km / s .
9 )
The time period of particle in SHM is 8 sec. At t = 0
, it is at mean position , the
ratio of distance traveled at first and 2nd second is . . . . . . . . . . . . . . . . ?
Solution : -
Now go to online quiz section and Physics Quiz 9 is uploaded related to these mcqs , so check your preparation by this link : -