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 depends on the weight of an object D) A force that exists only in liquids
A) Relative friction B) Dynamic friction C) Kinetic friction D) Static friction
A) When an object is sliding down a slope B) When an object is at rest on a surface C) When two surfaces are in relative motion D) When an object is moving at constant velocity
A) Rolling friction B) Kinetic friction C) Fluid friction D) Static friction
A) It helps in moving objects easily B) It generates heat which is useful in winter C) It causes objects to slip easily D) It reduces wear and tear of surfaces
A) It helps in walking B) It increases the grip between tires and roads C) It reduces the efficiency of machines D) It makes writing on paper easier
A) The ability of a liquid to flow easily B) The tendency of a liquid to evaporate C) The resistance of a fluid to flow D) The measure of a gas's density
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 starts falling B) The velocity at which friction becomes zero C) The maximum velocity attained by an object in free fall D) The velocity at which an object stops moving
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 on a frictionless surface D) By measuring the velocity of an object at rest
A) The mass of an object per unit of volume B) The weight of an object per unit of volume C) The volume of an object per unit of mass D) The resistance of an object to acceleration
A) The density of a substance compared to the density of water B) The density of a substance compared to the density of air 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 an object on a liquid B) The force exerted by a liquid on an object immersed in it C) The force exerted by an object on a surface D) The force exerted by gravity on an object
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 density B) Its mass C) Its weight D) Its volume
A) Force exerted per unit distance B) Force exerted per unit area C) Force exerted per unit mass D) Force exerted per unit volume
A) It depends on the type of fluid B) It increases throughout the fluid C) It remains constant throughout the fluid D) It decreases throughout the fluid
A) v = u / a * t B) v = u + at C) v = u - at D) v = u * a * t
A) Change in distance per unit time B) Change in velocity per unit time C) Change in distance per unit velocity D) Change in time per unit distance
A) 6 m/s² B) 8 m/s² C) 4 m/s² D) 10 m/s²
A) 20 m/s B) 10 m/s C) 2 m/s D) 5 m/s
A) B B) A C) C D) D
A) directly with volume B) directly with density C) inversely with density D) indirectly with volume
A) P = F²A² B) P = √F\A C) P = F/A D) P = A/F
A) P = 5 x 103Nm-2 B) P = 0.5 x 103Nm-2 C) P = 1.5 x 103Nm-2 D) P = 2.5 x 103Nm-2
A) E B) C C) A D) B E) D
A) Density B) Floatation C) Pressure D) Upthrust
A) D B) B C) A D) C
A) C B) B C) A D) D
A) A B) C C) D D) B
A) Viscous force, mass, upthrust B) Viscous force, upthrust and weight C) Density, upthrust, weight D) Density, pressure and viscous force
A) B B) A C) C D) D
A) E B) A C) B D) C E) D
A) A B) C C) E D) D E) B
A) 50.0ms-1 B) 25.0ms-1 C) 0.5ms-1 D) 2.0ms-1
A) Velocity B) Distance C) Speed D) Acceleration
A) Acceleration 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) Time on the vertical axis and velocity on the horizontal axis
A) D B) C C) B D) A
A) They both get to the bottom at the same time B) The stone dropped in the cylinder of engine oil gets to the bottom faster C) They both stop at the middle of the cylinder D) The stone dropped in the cylinder of water gets to the bottom faster
A) Viscidity B) Viscostatic C) Viscoelastic D) Viscoidal
A) Brownian's principle B) Newton's principle C) Archimedes principle D) Pascal's principle
A) D B) B C) A D) C
A) Barometer B) Hygrometer C) Hydrometer D) Calorimeter
A) C B) E C) A D) D E) B
A) B B) A C) D D) C
A) C B) A C) B D) D
A) Upthrust B) Weight C) Friction force D) Reaction force
A) Uniform velocity B) Retardation C) Distance D) Acceleration
A) Mass B) Distance C) Time D) Acceleration
A) Push forces and pull forces B) Field forces and push forces C) Contact forces and field forces D) Magnetic forces and contact forces |