JAMB Physics 2001 past questions

In the diagram above, which of the simple pendulum will resonate with P when set into oscillation?

The height at which the atmosphere ceases to exist is about 80km. If the atmospheric pressure on the ground level is 760 mmHg, the pressure at a height of 20km above the ground level is

The diagram above is a block-and-tackle pulley system in which an effort of 80N is used to lift a load of 240N. the efficiency of the machine is

If a spherical metal bob of radius 3cm is fully immersed in a cylinder containing water and the water level rises by 1cm, what is the radius of the cylinder?

I. The earth is not spherical but elliptical in shape II Variation in latitude and longitude III Rotation of the earth on its axis IV Variation in the density of the earth On which combination of the above does the weight of an object vary on the earth’s surface?

The efficiency of a machine is always less than 100% because the

Which of the following consists entirely of vector quantities?

Ice cubes are added to a glass of warm water. The glass and water are cooled by

The terrestrial telescope has one extra lens more than the astronomical telescope. The extra lens is for

The driving mirror of a car has a radius of curvature of 1m. A vehicle behind the car is 4m from the mirror. Find the image distance behind the mirror.

If a ray traveling in air is incident on a transparent medium as shown in the diagram, the refractive index of the medium is given as

The thermometric substance of an absolute thermometer is

In the diagram above, the current I is

The diagram above shows two capacitors P and Q of capacitances 2uF and 4 uF respectively [PAGE 84] connected to a.d.c. source. The ratio of energy stored in P to Q is

The diagram above shows three capacitors C1, C2 and C3 of capacitances 2ìF, 6 ìF and 3 ìF respectively. The potential differences across C1, C2 and C3 respectively are

In a Daniel cell, the depolarize, positive and negative electrodes are respectively

The diagram above shows a closed square box of side 0.5m in a uniform electric field E in the direction shown by the arrows. What is the flux for the box?

In the circuit diagram above, the ammeter reads a current of 3A when R is 5 Ohms and 6A when R is 2 Ohms. Determine the value of x

When a piece of rectangular glass block is inserted between two parallel plate capacitor, at constant plate area and distance of separation, the capacitance of the capacitor will

The ratio of electrostatic force FE to gravitational force FG between two protons each of charge e and mass m, at a distance d is

In the diagram above, determine the r.m.s. current

The particle emitted when 3 9K decays to 3 9K is

The current through a resistor in a.c. circuit is given as 2 sin wt. Determine the d.c. equivalent of the current

I Low pressure II High pressure III High potential difference IV Low potential difference Which combination of the above is true of the conduction of electricity through gases?

Which of the following metals will provide the greatest shield against ionizing radiation?

The process of energy production in the sun is

The force on a current carrying conductor in a magnetic field is greatest when the

Energy losses through eddy currents are reduced by using