A) A force that depends on the weight of an object B) A force that causes motion between two surfaces in contact C) A force that opposes motion between two surfaces in contact D) A force that exists only in liquids
A) Relative friction B) Static friction C) Dynamic friction D) Kinetic friction
A) When an object is moving at constant velocity B) When two surfaces are in relative motion C) When an object is sliding down a slope D) When an object is at rest on a surface
A) Fluid friction B) Kinetic friction C) Static friction D) Rolling friction
A) It helps in moving objects easily B) It reduces wear and tear of surfaces C) It causes objects to slip easily D) It generates heat which is useful in winter
A) It makes writing on paper easier B) It reduces the efficiency of machines C) It helps in walking D) It increases the grip between tires and roads
A) The resistance of a fluid to flow B) The measure of a gas's density C) The tendency of a liquid to evaporate D) The ability of a liquid to flow easily
A) Higher temperature decreases viscosity B) Temperature affects viscosity differently in different liquids C) Temperature has no effect on viscosity D) Higher temperature increases viscosity
A) The velocity at which an object stops moving B) The maximum velocity attained by an object in free fall C) The velocity at which an object starts falling D) The velocity at which friction becomes zero
A) By measuring the acceleration of an object in free fall B) By dropping an object and measuring its velocity as it falls C) By measuring the velocity of an object at rest D) By measuring the velocity of an object on a frictionless surface
A) The volume of an object per unit of mass B) The resistance of an object to acceleration C) The mass of an object per unit of volume D) The weight of an object per unit of volume
A) The density of a substance compared to the density of air B) The density of a substance compared to the density of water C) The density of a substance compared to the density of gold D) The density of a substance compared to the density of iron
A) The force exerted by a liquid on an object immersed in it B) The force exerted by an object on a liquid C) The force exerted by gravity on an object D) The force exerted by an object on a surface
A) It floats if its density is greater than the fluid's density B) It floats if its density is less than the fluid's density C) It sinks if its density is less than the fluid's density
A) Its weight B) Its mass C) Its volume D) Its density
A) Force exerted per unit mass B) Force exerted per unit area C) Force exerted per unit volume D) Force exerted per unit distance
A) It remains constant throughout the fluid B) It increases throughout the fluid C) It depends on the type of fluid D) It decreases throughout the fluid
A) v = u - at B) v = u * a * t C) v = u + at D) v = u / a * t
A) Change in distance per unit velocity B) Change in time per unit distance C) Change in velocity per unit time D) Change in distance per unit time
A) 8 m/s² B) 10 m/s² C) 6 m/s² D) 4 m/s²
A) 20 m/s B) 10 m/s C) 5 m/s D) 2 m/s
A) D B) C C) A D) B
A) inversely with density B) directly with volume C) indirectly with volume D) directly with density
A) P = F²A² B) P = A/F C) P = F/A D) P = √F\A
A) P = 2.5 x 103Nm-2 B) P = 5 x 103Nm-2 C) P = 0.5 x 103Nm-2 D) P = 1.5 x 103Nm-2
A) B B) A C) E D) D E) C
A) Density B) Floatation C) Upthrust D) Pressure
A) D B) C C) A D) B
A) D B) C C) B D) A
A) C B) A C) B D) D
A) Viscous force, mass, upthrust B) Density, upthrust, weight C) Viscous force, upthrust and weight D) Density, pressure and viscous force
A) D B) B C) A D) C
A) E B) B C) D D) A E) C
A) D B) C C) A D) E E) B
A) 0.5ms-1 B) 2.0ms-1 C) 25.0ms-1 D) 50.0ms-1
A) Acceleration B) Speed C) Velocity D) Distance
A) Time on the vertical axis and velocity on the horizontal axis B) Velocity on the vertical axis and acceleration on the horizontal axis C) Velocity on the vertical axis and time on the horizontal axis D) Acceleration on the vertical axis and velocity on the horizontal axis
A) A B) D C) B D) C
A) They both get to the bottom at the same time B) They both stop at the middle of the cylinder C) The stone dropped in the cylinder of engine oil gets to the bottom faster D) The stone dropped in the cylinder of water gets to the bottom faster
A) Viscoidal B) Viscoelastic C) Viscostatic D) Viscidity
A) Pascal's principle B) Brownian's principle C) Archimedes principle D) Newton's principle
A) B B) C C) D D) A
A) Hygrometer B) Barometer C) Hydrometer D) Calorimeter
A) A B) B C) D D) E E) C
A) A B) C C) D D) B
A) C B) B C) D D) A
A) Friction force B) Upthrust C) Reaction force D) Weight
A) Uniform velocity B) Acceleration C) Retardation D) Distance
A) Time B) Mass C) Acceleration D) Distance
A) Contact forces and field forces B) Magnetic forces and contact forces C) Field forces and push forces D) Push forces and pull forces |