Post Utme Physics Past Questions and Answers

Question 301:

An object of mass 0.2kg and density 600kgm³ is suspended with a string so that it is immersed in paraffin of density ,(900kgm^-3\). Find the tension in the string ____________

A. 0.2 N
B. 2.0 N
C. 1.0 N
D. 0.1 N

Question 302:

A rocket burns fuel at the rate of \(20kgs^-1\) and eject it with a velocity of 5.0 x 10³m/s-1
Calculate the thrust exerted by gas on the rocket.

A. \(1.0 x 105ms^-1\)
B. \(2.0 x105ms^-1\)
C. \(3.0 x105ms^-1\)
D. \(5.0 x105ms^-1\)

Question 303:

Which of the following pairs consist fundamental quantities only?

A. Velocity and gravitational potential
B. Acceleration and field strength
C. Momentum and work done
D. Moment and mass.

Question 304:

One of the limitations of Thomson's model of the atom is that it does not explain.

A. Small angle
B. Stability of the atom
C. Ionization process
D. The variation of the effective atomic radius

Question 305:

A wire carrying a current of IGA and 2.5m length is placed in a field of flux density 0.14T. what is the force of the wire if it is placed at 600 to field?

A. 30.3N
B. 20.5N
C. 15.3N
D. 10.5N