Mechanics and Properties of Matter Multiple Choice Questions (MCQ) PDF Download - 2

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

1. ΔE = Δm × c, where "c" denotes the speed of light.
2. ΔE = Δm × c², where "c" denotes the speed of light.
3. ΔE = Δm ⁄ c, where "c" denotes the speed of light.
4. ΔE = Δm ⁄ c², where "c" denotes the speed of light.

Bernoulli's principle states that, for streamline motion of an incompressible non-viscous fluid:

1. the pressure at any part + the kinetic energy per unit volume = constant
2. the kinetic energy per unit volume + the potential energy per unit volume = constant
3. the pressure at any part + the potential energy per unit volume = constant
4. the pressure at any part + the kinetic energy per unit volume + the potential energy per unit volume = constant

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:

1. weight
2. density
3. shape
4. temperature

Young's modulus is defined as

1. tensile strain/tensile stress
2. tensile stress/tensile strain
3. tensile stress × tensile strain
4. length/area

Velocity of escape is equal to

1. r × √(2g); where r: radius of Earth or any other planet for that matter, g: gravitational field strength
2. g × √(2r); where r: radius of Earth or any other planet for that matter, g: gravitational field strength
3. √(2g) ⁄ r; where r: radius of Earth or any other planet for that matter, g: gravitational field strength
4. √(2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength