UNICAL Physics 2010/2011 Past Questions

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

A long sighted person is to read a book held at a distance of 20cm from the eyes. Which of the following will the person require to read the book with ease?

A.nothing
B.concave lens
C.convex lens
D.concave mirror

An object at the bottom of a pool 10m deep is seen by an observer as if it is 8m deep. What is the refractive index of the liquid?

A.0.25
B.0.20
C.1.25
D.0.8

Which of the following has the highest surface tension.

A.soapy water
B.cold water
C.warm water
D.salt warm

The emf developed in a circuit is directly proportional to the rate of change of magnetic flux. The above was a finding from

A.Maxwell
B.Faraday
C.Ampere
D.Lenz

Which of the following is stored by a dry Leclanche cell?

A.chemical energy
B.solar energy
C.electrical energy
D.heat energy

A ball is projected horizontally from the top of a hill a velocity of 20m/s. If it reaches the ground 4s later. What is the height of the hill? (g = 10m/s²)

A.200m
B.20m
C.160m
D.40

The expansion of solids can be considered a disadvantage in:

A.fire-alarm system
B.thermostat
C.riveting of steel plates
D.balance wheel of a watch

An object is placed between 2 mirror inclined at an angle of 120° and facing each other. Determine the number of images observed in the 2 mirrors.

A.2
B.3
C.4
D.1

Which of these instruments is suitable for making the most accurate measurement of the internal diameter of a test tube?

A.meter rule
B.venier calipers
C.micrometer screw guage
D.spectrometer

Which of the following instruments would be best suited in studying the stars?

A.periscope
B.microscopes
C.telescope
D.spectroscope