JEE PHYSICS UNIT 07
QUIZ NO 4
TOTAL QUESTIONS = 20
1. The property of a material to regain its original shape after deformation is called
A. Plasticity
B. Elasticity
C. Ductility
D. Malleability
2. The ratio of lateral strain to longitudinal strain is known as
A. Young's modulus
B. Bulk modulus
C. Shear modulus
D. Poisson's ratio
3. According to Hooke's law, stress is directly proportional to
A. Strain
B. Force
C. Area
D. Length
4. The ability of a material to be drawn into thin wires is referred to as
A. Malleability
B. Ductility
C. Brittleness
D. Hardness
5. The SI unit of viscosity is
A. Pascal
B. Newton-second
C. Poiseuille
D. Poise
6. The rise or fall of a liquid in a capillary tube is due to
A. Viscosity
B. Surface tension
C. Density
D. Pressure
7. The angle of contact between pure water and pure glass is
A. 0°
B. 45°
C. 90°
D. 135°
8. The terminal velocity of a spherical object falling through a viscous medium is proportional to
A. Radius
B. Radius squared
C. Radius cubed
D. Independent of radius
9. The phenomenon of rise or depression of liquids in a narrow tube is called
A. Adhesion
B. Cohesion
C. Capillarity
D. Viscosity
10. The modulus of elasticity which relates to the change in volume under pressure is
A. Young's modulus
B. Shear modulus
C. Bulk modulus
D. Modulus of rigidity
11. Stoke's law gives the relationship for the force of viscosity on a sphere moving through a fluid. The force is proportional to
A. Velocity
B. Velocity squared
C. Radius
D. Radius squared
12. The temperature at which the surface tension of a liquid becomes zero is called
A. Boiling point
B. Melting point
C. Critical temperature
D. Triple point
13. The property of a liquid to resist relative motion between its layers is called
A. Surface tension
B. Viscosity
C. Density
D. Adhesion
14. The excess pressure inside a soap bubble is
A. Directly proportional to its radius
B. Inversely proportional to its radius
C. Directly proportional to the square of its radius
D. Independent of its radius
15. The phenomenon responsible for the working of a mercury barometer is
A. Viscosity
B. Surface tension
C. Capillarity
D. Adhesion
16. When a liquid flows in a pipe, the type of flow characterized by smooth, parallel layers is called
A. Turbulent flow
B. Laminar flow
C. Transitional flow
D. Chaotic flow
17. The point on the stress-strain curve beyond which the material does not return to its original shape is called
A. Proportional limit
B. Elastic limit
C. Yield point
D. Fracture point
18. The SI unit of surface tension is
A. Newton
B. Newton per meter
C. Joule
D. Joule per meter
19. The phenomenon of liquid rising in a narrow tube against gravity is due to
A. Cohesion
B. Adhesion
C. Both cohesion and adhesion
D. None of the above
20. The property of a material to withstand deformation under tensile stress is known as
A. Brittleness
B. Hardness
C. Toughness
D. Ductility
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