ABU Physics 2014/2015 Past Questions

Which of the following is not true about semi conductors?

The minimum energy necessary to remove an electron from a given atom at infinity is called......

Find the De Brogile wavelength of a 0.01kg pallet having a velocity of 10m/s and energy 66 × 10³⁴js

A step-up transformer is designed to operate from a 25v supply. If the transformer is 80% efficient, determine the current in the primary coil when the output terminals are not connected to 240V 100W lamp

An object of mass 0.2kg and density 6000kgm³ is suspended with a string so that it is immersed in paraffin of density 900kgm^-3

A rocket burns fuel at the rate of 20kgs^-1 and eject it with a velocity of 5.0 × 10³m/s^-1, Calculate the thrust exerted b gas on the the rocket

Which of the following pairs consist fundamental of quantities only?

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

A wire carrying a current of 1GA and 25m 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?

In the transformer, the magnetism of the core is repeatedly reverse by the magnetic field resulting