JAMB UTME - Physics - 1983

In a resonance tube experiment, a tube fixed length is closed at one end and several tuning forks of increasing frequency used to obtain resonance at the open end. If the tuning fork with the lowest frequency which gave resonance had a frequency \(f_1\) and the next tuning fork to give resonance had a frequency \(f_2\), find the ratio \(\frac{f^2}{f^2}\).

PQ is a thin rod on a horizontal table, RS is a plane mirror inclined at \(45^\circ C\) to the horizontal as shown above. The image of PQ as seen in the mirror by the eye T is

Which of the following figures gives the correct resultant R of two vectors P and Q?

Which of the following may be used to determine relative humidity in a physics laboratory?
I. Manometer
II. Wet-and-dry bulb hygrometer
III. Hair hygrometer
IV. A hydrometer.

The speed of light in vacuum is \(3.0 \times 10^{8}\,\mathrm{ms}^{-1}\). If the refractive index of a transparent liquid is \(\frac{4}{3}\), then the speed of light in the liquid is

In the Figure above, QR is a vertical conductor and the current I flows from R to Q, P is a point on the horizontal plane and is to the south of the wire. The direction of the magnetic field at P due to the current is

Each of the figures in the diagram above represent two current carrying conductors situated close to each other. In which two diagrams, are the forces between the two wires attractive

The diagram above shows three circuits, the internal resistances of the batteries are negligible. which of the currents is the largest

The image above shows an inverted U-tube with the open end, O of one limb below the level, W of water in the tank, in order that water should begin to flow from the tank it is is necessary that

Four resistors R1, R2, R3 and R4 are connected in series as shown above, V1, V2, V3 are voltmeters connected as indicated above. Which of the following relations is correct??

In a resonance tube experiment, a tube of fixedlength in closed at one end and several turningforks of increasing frequency used to obtainresonance at the open end. If the turning fork withthe lowest frequency which gave resonance had a frequency f1 and the next turning fork to giveresonance had a frequency f2, find the ratio f2/ f1.

Which of the following may be used to determine the relative humidity in a physics laboratory I. Manometer

II. Wet-and-Dry Bulb Hygrometer

III. Hair Hygrometer

IV. A Hydrometer