Sunday

The basic principle of operation of a beam balance is?

A. Hooke's law B. Archimedes principle C. law of flotation D. principle of moments Correct Answer: Option D - principle…

3 years ago

In which of the following situations is friction not useful?

A. Operation of a grinding machine B. Walking C. Application of brakes D. Moving piston in a sleeve Correct Answer:…

3 years ago

The viscosity of a fluid depends on the following factors except the?

A. relative motion between the layers of the fluid B. nature of the material of the fluid C. surface area…

3 years ago

Using venier calipers; which of the following readings gives the correct measurement for the length of a rod?

A. 4.1 cm B. 4.13cm C. 125 cm D. 1254 cm Correct Answer: Option B = 4.13cm Explanation Vernier calipers…

3 years ago

A quantity of water at 0 °C is heated to 30 °C. For each degree rise in temperature, its density will?

A. rise steadily B. fall steadily C. fall and then rises D. rise and then falls Correct Answer: Option B…

3 years ago

Which of the folowing statements about light travelling from one material medium to another is not correct?

A. The refracted angle is less than the incident angle if the speed is higher in the first material A.…

3 years ago

Which of the following concepts is a method of heat transfer that does not require a material medium?

A. Conduction B. Diffusion C. Convection D. Radiation Correct Answer: Option D - Radiation Explanation Radiation is energy that comes…

3 years ago