Which of the following consists entirely of vector quantities?

5 years ago

A. Velocity, magnetic flux and reaction B. Tension, magnetic flux and mass C. Displacement, impulse and power D. Work, pressure…

The efficiency of a machine is always less than 100% because the?

5 years ago

A. work output is always greater than the work input B. load lifted is always greater than the effort applied…

On which combination of the above does the weight of an object vary on the earth’s surface?

5 years ago

I. The earth is not spherical but elliptical in shape II. Variation in latitude and longitude III. Rotation of the…

The resultant of two forces acting on an object is maximum if the angle between them is?

5 years ago

A. 45° B. 0° C. 90° D. 180° Correct Answer: Option B = 0° Explanation The resultant of two forces…

A stone of mass 1kg is dropped from a height of 10m above the ground and falls freely under gravity. Its kinetic energy 5m above the ground is then equal to?

5 years ago

A. its kinetic energy on the ground B. twice its initial potential energy C. its initial potential energy D. half…

The colours seen on soap bubbles are due to?

5 years ago

A. Diffraction B. Refraction C. Dispersion D. Interference Correct Answer: Option D - Interference

If the total force acting on a particle is zero; the linear momentum will?

5 years ago

A. Increase B. Decrease C. Be Constant D. Increase then decrease Correct Answer: Option C - Be Constant

Which of the following statements is true of the properties of a moving coil galvanometer?

5 years ago

A. THe coil has a small area B. There are strong hair springs to gives a large control panel C.…