Physics Past Questions and Answers

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

Question 1462:

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

Question 1463:

The diagram above illustrates trapped air in a syringe placed in water that is gradually heated. It is observed that the piston rises as the temperature of the water rises. Which of the following statements explains this observation?

A Frequency of collision of trapped air molecules with walls of the syringe is more
B Molecules of trapped air expands more
C Speed of the trapped air molecules decreases
D Number of molecules of trapped air increases

Question 1464:

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

A Manometer
B Hydrometer
C Hypsometer
D Hygrometer

Question 1465:

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