physics

A body is dropped from a certain height above the ground level, falls with uniform?

A. speed B. velocity C. acceleration D. retardation Correct Answer: Option D D. retardation

6 years ago

A body is said to be moving with uniform acceleration if it experiences equal?

A. increase in velocity at equal time intervals B. decreases in velocity at equal time intervals C. increases in speed…

6 years ago

The speed of an object in rectilinear motion can be determined from the?

A. area under a velocity-time graph B. area under a distance-time graph C. slope of a distance-time graph D. slope…

6 years ago

An elastic string of force constant 200N m-1 is stretched through 0.8m within its elastic limit. Calculate the energy stored in the string.

A. 64.0J B. 80.0J C. 128.0J D. 160.0J Correct Answer: Option A A. 64.0J Explanation E = ½Ke² = ½×200(0.8)²…

6 years ago

On which of the following factor does the viscosity of a liquid depend?

i. Nature of the liquid. ii. Temperature of the liquid. iii. Area of the liquid surface A. i and ii…

6 years ago

A steel needle floating on water, sinks when kerosene is added to the water. This is because the kerosene

A. increased the surface tension of the water B. reduces the density of the water C. reduces the surface tension…

6 years ago

Which of the following concept is not an evidence of the particle nature of matter?

A. diffusion B. brownian motion C. diffraction D. crystallization Correct Answer: Option D D. crystallization

6 years ago

Calculate the change in volume when 90g of ice is completely melted. [density of water = 1g cm‾³, density of ice = 0.9cm‾³]

A. 0.00cm³ B. 9.00cm³ C. 10.00cm³ D. 90.00cm³ Correct Answer: Option C C. 10.00cm³

6 years ago