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