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