1 )
For a given angle of projection , if the time of flight of projection is
doubled , then horizontal range will increase to : -
A ) 2 times , B ) 4 times ,
C ) 8 times , D ) None of these ,
Correct
Answer : - B ) 4 times ,
Solution : -
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2 )
If the acceleration due to gravity at the earth’s surface is 9.8 m / s and the
mass of earth is 80 times that of moon and the radius of earth is 4 times that
of moon , the value of G at the moon’s surface will be : -
A ) 0.96 m / s2 , B
) 1.96 m / s2 ,
C ) 9.8 m / s2 , D ) None of these ,
Correct
Answer : - B ) 1.96 m / s2 ,
Solution : -
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3 )
An inclined plane makes an angle of 30 degree with horizontal . A solid sphere
rolling down this inclined plane from rest without slipping has linear
acceleration equal to : -
Solution :-
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