UNIPORT Physics 2014/2015 Past Questions

Practice each question, then open it to see the full details.

A diverging lens forms an image of an object placed 10cm in front of it, at a point 6.5cm from the lens. what is the focal length of the lems

A.18.6cm
B.16.5cm
C.+3.9cm
D.21.2cm

Which colour of white light deviates most from the original path when light is incident on a piece of glass?

A.red
B.blue
C.violet
D.orange
E.yellow

which of the following statement correctly defines temperature?

A.temperature causes hotness
B.the total energy of a body is measured in temperature
C.temperature is the property of the body which determines whether it is in thermal equilibrium with another body
D.thermometer measure temperature

The following set of instrument is used for temperature measurement?

A.Alcohol thermometer, calorimeter and thermocouple
B.pyrometer, thermocouple and clinical thermometer
C.barometer, resistance thermometer and viscometer
D.none of the above

A pin is placed at the bottom of a magnifying glass if the object is placed

A.1.80
B.1.50
C.1.33
D.1.5

A converging lens can be used as a magnifying glass if the object is placed

A.at F
B.between F and the pole
C.at the pole
D.at 2f

A converging lens of focal length F, forms a real image whose size is the same as that of the object the object distance is equal to

A.4F
B.2F
C.F
D.F/2

When the generation is required from a generation, the slip rings are replaced by a commulator which is made up of

A.a split ring
B.two split-rings
C.two copper brushes
D.two insulating coils

In semiconductors the Hall Effect can be used to identify

A.transistor
B.the carrier either electrons or holes
C.charge densities and concentration
D.the generation e.m.f

In transformers the primary and secondary coil are wound on a

A.laminated hard iron core
B.permanent magnet
C.laminated soft iron core
D.insulated magnet