physics

Which of the following statements about static friction is correct? It

A. is independent of the nature of the surface in contact B. depends on the area of surface in contact…

6 years ago

The types of motion which a cylindrical drum rolling down an inclined plane undergoes are?

A. circular and translational B. rotational and translational C. rotational and circular D. rectilinear and circular Correct Answer: Option B…

6 years ago

Which of the following instruments is best for measuring the diameter of a thin constantan wire?

A. callipers B. metre rule C. micrometre screw gauge D. vernier callipers Correct Answer: Option C C. micrometre screw gauge

6 years ago

Which of the following properties of a long steel bar would alter if the bar were melted, recast into a cube and allowed to cool to its original temperature?

A. density B. volume C. specific heat capacity D. electrical resistance Correct Answer: Option B B. volume

6 years ago

The movement of fluid up or down a narrow tube is?

A. osmosis B. brownian motion C. capillarity D. diffusion Correct Answer: Option C C. capillarity

6 years ago

A block of wood of density 0.6 gcm‾³, weighing 3.06N in air, floats freely in a liquid of density 0.9 gcm‾³. Calculate volume of the portion immersed (g = 10ms‾²)

A. 510cm³ B. 340cm³ C. 254cm³ D. 170cm³ Correct Answer: Option B B. 340cm³ Explanation V = M/D = 3.06/10…

6 years ago

Which of the following devices is used to determine the relative density of an acid?

A. manometer B. hydrometer C. hypsometer D. hygrometer Correct Answer: Option B B. hydrometer

6 years ago

The derived unit of pressure can be expressed as?

A. kgms‾² B. kg m‾¹s‾² C. kg m‾²s‾² D. kg m‾¹s² Correct Answer: Option B B. kg m‾¹s‾²

6 years ago

Which of the following modes is the most economical method of transmitting electrical power over long distances?

A. alternating current at low voltage and high current B. alternating current at high voltage and high current C. alternating…

6 years ago