Related Questions

A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will
A Remain horizontal
B Slant up towards direction of pull
C Slant down towards direction of pull
D None of the above
The velocity ratio in case of an inclined plane inclined at angle 'θ' to the horizontal and weight being pulled up the inclined plane by vertical effort is
A sinθ
B cosθ
C tanθ
D cosecθ
Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation?
A Cost
B Availability
C Toxicity
D Selectivity
For separating small pieces of metal from engine oil of a car, the best separating technique is the
A Chromatography
B Evaporation
C Filtration
D Fractional distillation
The most economical pulp for the production of newsprint would be the __________ pulp.
A Groundwood
B Sulphate
C Sulphite
D Semichemical
The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of
A Friction
B Limiting friction
C Repose
D Kinematic friction
The angle which an inclined surface makes with the horizontal when a body placed on it is on the point of moving down, is called
A Angle of repose
B Angle of friction
C Angle of inclination
D None of these
The range of projectile on a downward inclined plane is ________ the range on upward inclined plane for the same velocity of projection and angle of projection.
A Less than
B More than
C Equal to
D None of these
If the direction of projection bisects the angle between the vertical and the inclined plane, then the range of projectile on the inclined plane is
A Zero
B Maximum
C Minimum
D None of these
The direction of projection should bisect the angle between the inclined plane and the vertical for a range of a projectile on inclined plane
A To be zero
B To be maximum
C To be minimum
D None of these

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