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