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