A Level Physics Practice Test: Mechanics and Properties of Matter | Practice Test / Quiz / MCQs

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A Level Physics Practice Test: Mechanics and Properties of Matter

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Mechanical properties of matter are used to classify and identify materials. Some common mechanical properties include: strength, ductility, hardness, impact resistance, and fracture toughness. Other properties of matter include: Physical properties: These include mass, volume, density, color, hardness, melting and boiling points, and electrical conductivity. Chemical properties: These include reactivity, flammability, ability to rust, toxicity, acidity, and heat of combustion. The three basic states of matter are solid, liquid, and gas. Related Test: A Level Physics Practice Test:... Show more

Mechanical properties of matter are used to classify and identify materials. Some common mechanical properties include: strength, ductility, hardness, impact resistance, and fracture toughness.

Other properties of matter include:
Physical properties: These include mass, volume, density, color, hardness, melting and boiling points, and electrical conductivity.
Chemical properties: These include reactivity, flammability, ability to rust, toxicity, acidity, and heat of combustion.

The three basic states of matter are solid, liquid, and gas.

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A Level Physics Practice Test: Mechanics and Properties of Matter

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1. In elastic collisions,

only the total momentum of the colliding objects is conserved.both of the momentum and total kinetic energy are conserved.only the total kinetic energy is conserved.neither momentum of the colliding bodies nor the total kinetic energy are recoverable.

2. An object moving in a circle of radius ‘r’ with a constant speed ‘v’ has a constant acceleration towards the center equal to

v×rv²×rv⁄rv²⁄r

3. Hooke's law states that

the extension is inversely proportional to the load when the elastic limit is not exceededthe extension is independent of the load when the elastic limit is not exceededload is dependent on extensionthe extension is proportional to the load when the elastic limit is not exceeded

4. While Young's modulus ‘E’ relates to change in length and bulk modulus ‘K’ relates to change in volume, modulus of rigidity ‘G’ relates to change in:

densityweighttemperatureshape

5. Velocity of sound waves through any material depends on

the material's density ‘d’ as well as its modulus of elasticity ‘E’the material's density ‘d’ onlyneither the material's density ‘d’ nor its modulus of elasticity ‘E’the material's modulus of elasticity ‘E’ only

6. Total angular momentum of a body is given by

I² × ω; where I: moment of inertia of the body, ω: angular velocityI × ω; where I: moment of inertia of the body, ω: angular velocityI² × ω²; where I: moment of inertia of the body, ω: angular velocityI × ω²; where I: moment of inertia of the body, ω: angular velocity

7. Speed ‘v’ with which wave travels through a medium is given by

v=d/tmodulus of elasticity/√(density of the medium)√(modulus of elasticity/density of the medium)modulus of elasticity/density of the medium

8. Period of simple harmonic motion of a spiral spring or elastic thread is given by

T = 2π × √(extension produced/gravitational field strength)T = 2π × (extension produced/gravitational field strength)T = 2π × (√(extension produced)/gravitational field strength)T = 2π × (extension produced/√(gravitational field strength))

9. Velocity of escape is equal to

r × √(2g); where r: radius of Earth or any other planet for that matter, g: gravitational field strengthg × √(2r); where r: radius of Earth or any other planet for that matter, g: gravitational field strength√(2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength√(2g) ⁄ r; where r: radius of Earth or any other planet for that matter, g: gravitational field strength

10. Einstein's mass-energy relationship states that if the mass decreases by Δm, the energy released ΔE is given by

ΔE = Δm ⁄ c, where 'c' denotes the speed of light.ΔE = Δm × c, where 'c' denotes the speed of light.ΔE = Δm × c², where 'c' denotes the speed of light.ΔE = Δm ⁄ c², where 'c' denotes the speed of light.

11. Dimensions of Young's modulus are

[M] [L]-2 [T]-2[M]-1 [L]-1 [T]-2[M] [L]-1 [T]-2[M]-1 [L]-2 [T]-2

12. Dimensions of strain are

[L]-1[L]It's a dimensionless quantity[M] [L]-1 [T]-2

13. Young's modulus is defined as

length/areatensile stress × tensile straintensile stress/tensile straintensile strain/tensile stress

14. A person of mass ‘m’ kg jumps from a height of ‘h’ meters, he will land on the ground with a velocity equal to:

√(2 × g × h)2√(g × h)1/h × √(2 × g)2gh

15. In linear motion, the energy is given by 1⁄2mv2. Similarly, in rotational motion, the rotational energy is given by

1/2 × I² × ω²; where I: moment of inertia of the body, ω: angular velocity1/2 × I × ω²; where I: moment of inertia of the body, ω: angular velocity1/2 × I² × ω; where I: moment of inertia of the body, ω: angular velocity1/2 × I × ω; where I: moment of inertia of the body, ω: angular velocity

16. Tensile strain is equal to

Force per unit areaExtension per unit lengthForce per unit lengthForce per unit volume

17. Dimensions of gravitational constant ‘G’ are:

[M]-1 [L]3 [T]-2[M]-1 [L]2 [T]-1[M] [L]-1 [T]2[M] [L]3 [T]-2

18. Force that acts on a mass of 1 g and gives it an acceleration of 1 cm s-2 is defined as

1 pound-force1 dyne1 pa-force1 newton

19. Isothermal bulk modulus is equal to

Υ ⁄ P; where Υ: the ratio of the specific heat capacities of the gas, P: pressureThe ratio of the specific heat capacities of the gasPressureΥ × P; where Υ: the ratio of the specific heat capacities of the gas, P: pressure

20. At ‘yield point’ of a copper wire

the load hasn't exceeded the elastic limit yet; so, Hooke's law appliesLike Brass and Bronze, Copper has no yield pointeven the plastic stage has passed and the wire has snapped alreadythe load has already exceeded the elastic limit and the material has become plastic

21. Adiabatic bulk modulus is equal to:

PressureΥ ⁄ P; where Υ: the ratio of the specific heat capacities of the gas, P: pressureΥ × P; where Υ: the ratio of the specific heat capacities of the gas, P: pressureThe ratio of the specific heat capacities of the gas

22. Kepler's 3rd law states that...

the squares of the periods of revolution of the planets are proportional to the cube of their mean distance from sunthe squares of the periods of revolution of the planets are inversely proportional to the cube of their mean distance from sunthe periods of revolution of the planets are proportional to the cube of their mean distances from sunthe periods of revolution of the planets are inversely proportional to the cube of their mean distances from sun

23. Dimensions of relative density are

mass × length3length3 × mass-1mass × length-3It has no dimensions, since it's a ratio of two densities

24. Tensile stress is equal to

Extension per unit lengthExtension per unit areaForce per unit areaForce per unit volume

25. Assuming uniform density of the core, the acceleration due to gravity below the Earth's surface is

inversely proportional to the distance from the center of the Earthdirectly proportional to the distance from the center of the Earthinversely proportional to the square of the distance from the center of the Earthdirectly proportional to the square of the distance from the center of the Earth

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