Mechanical Properties of Solids

The elastic modulus of a material is independent of:

1. Nature of material
2. Temperature
3. Shape and size of specimen
4. Internal structure

The shear modulus is related to:

1. Change in volume
2. Change in length
3. Change in shape
4. Change in temperature

The breaking stress of a material depends on:

1. Nature of material
2. Shape only
3. Volume only
4. Colour of material

The dimensional formula of stress is:

1. [ML⁻¹T⁻²]
2. [MLT⁻²]
3. [ML²T⁻²]
4. [LT⁻²]

A material that can undergo large deformation before breaking is called:

1. Brittle material
2. Ductile material
3. Rigid material
4. Fragile material

The energy stored in a stretched wire is called:

1. Kinetic energy
2. Elastic potential energy
3. Thermal energy
4. Chemical energy

The slope of the stress-strain curve in the elastic region represents:

1. Pressure
2. Young's modulus
3. Force
4. Energy

Hooke's law states that within the elastic limit:

1. Stress is directly proportional to strain
2. Stress is inversely proportional to strain
3. Stress is equal to force
4. Strain is constant

The bulk modulus measures resistance against:

1. Change in shape
2. Change in volume
3. Change in length
4. Surface deformation

The maximum stress a material can withstand before permanent deformation occurs is called:

1. Elastic limit
2. Breaking point
3. Yield point
4. Plastic limit

The deformation produced in a body is called:

1. Strain
2. Stress
3. Pressure
4. Force

The ratio of lateral strain to longitudinal strain is called:

1. Young's modulus
2. Bulk modulus
3. Poisson's ratio
4. Shear modulus

The SI unit of Young's modulus is:

1. Newton
2. Pascal
3. Joule
4. Watt

Stress is defined as:

1. Force × Area
2. Force per unit area
3. Area per unit force
4. Change in length per unit length

The property of a material by which it regains its original shape after removal of deforming force is called:

1. Plasticity
2. Elasticity
3. Viscosity
4. Brittleness