physics

Boyle’s law may be written as?

A. P1V1= P2V2 B. V1 = V2 ÷ T1T2 C. P1T1 = P2T2 D. P1V1 ÷ T1 = P1V1 ÷…

5 years ago

If the volume of a gas is recoded as 76cm³ at a temperature of 27°C with a pressure of 800mmHg. What will be the volume of the gas at S.T.P?

A. 36.2cm³ B. 25.7cm³ C. 72.8cm³ D. 24.3cm³ Correct Answer: Option C - 72.8cm³ Explanation General formular of Gas laws…

5 years ago

In the diagram below; the neutral point is at?

A. R B. X C. S D. P Correct Answer: Option B = X

5 years ago

In the diagram below; which of the following velocity-time graphs shows uniform acceleration of a body from rest?

A. C B. D C. B D. A Correct Answer: Option C = B Explanation See the velocity-time graph.

5 years ago

If the magnification of a virtual image formed by an object 10cm from a convex less is 3; then the focal length of the lens is?

A. 10cm B. 20cm C. 25cm D. 15cm Correct Answer: Option D - 15cm Explanation M = v/u = 3…

5 years ago

Boiling occurs when the vapour pressure of a liquid is?

A. At the evaporation point B. Less than the atmospheric pressure C. Greater than the atmospheric pressure D. Equal to…

5 years ago

The impulse of a force is deduced from Newton’s second law as?

A. F = ma B. F = m( v−u/t) C. F = mg D. F = mv - mu Correct…

5 years ago

A body which weighs 50N in air displaces 3.7kg of water when partially immersed in water. Calculate the upthrust on the body?

A. 8.7N B. 37.0N C. 87.0N D. 13.0N Correct Answer: Option B - 37.0N Explanation Upthrust = Weight or water…

5 years ago

A manometer is an instrument used for measuring?

A. Relative density of liquid B. Pressure in liquids and gases C. Humidity D. Atmospheric pressure Correct Answer: Option B…

5 years ago