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