2006/2007 LAUTECH Physics Post-UTME

A solid weighs 0.0040n in air and 0.024N when fully immersed in a liquid of density 800kg^-3.
Calculate the volume of the solid (g=10ms^-2)

A body of mass 5kg starts from rest and then acted upon by a force 100N, the acceleration in ms^-2 and final velocity after 10sec will be

All these are true about impulses except

A car of mass 100kg moves at a constant speed of 20m/s along a horizontal road where the friction force is N200N.
Calculate the power developed by the engine.

According to Newton’s second law of motion :

The weight of heat energy needed to freeze one kilogram of milk at the inverse point is known as

In a certain process, 12,000 calories of Hexane is supplied to the system while the system does work 7500J.
Find the change in internal energy; Note 1 cal=4.184J

Some water is heated in a pot. The major mode(s) of the heat transfer through the water is/are by :

Calculate the quantity of heat required to completely convert 20kg ice at 0⁰C of water at the same temperature
(specific latent heat of fusion of ice = 336kJkg^-1)

An object of mass 10g requires 20J of heat energy to change its temperature by 20⁰
Calculate the specific heat capacity of the object.

Which of these radiations does not originate with the nucleus?

A tyre is pumped to a pressure of 30Nm^-2 at 27⁰C when the tyre rates up to 54⁰.
Find the new pressure assuming no change in volume.

An eclipse of the sun may occur when

The shortest mirror in which a person 2m height can see the entire image is

The nature of the image formed by an object placed 12cm from a converging lens of focal length 18cm is

An erect image three times the size of the object is obtained from a concave mirror of radius of curvature 36cm,
what is the position of the object from the mirror?

The angle of deviation of light of various colours passing through a glass prism decrease in the order

Two positive point charges of 12ꙡC and 8ꙡC respectively are 10cm apart. The work done in bringing them 4cm closer is
(K=9 x 10⁹Nm²c^-2)

The effective capacitance of a system of capacitors arranged such that a 4ꙡF capacitor is in series with 3ꙡ

How long will it take to heat 3kg of water from 28⁰C to 88⁰C using an electric kettle which taps 6A from a 210V supply?

A moving cell galvanometer has a resistance of 10Ω and a full-scale defection of 0.01A,
it can be converted into a voltmeter of 10Ω full-scale deflection by connecting a resistor of

A musical note is different from a noise in that the

Any line or section through an advancing wave in which all the particles are in the same phase is called

Which of the following diameters is the best absorber of X-rays/gamma?

Thunder is usually heard some seconds after lighting is seen because

If a source of sound is moving, a stationary listener will hear a sound of different frequencies. This is called

The period of vibration of a wave of wavelength 30m moving at a speed of 300m/s

The quality (timber) of sound depends on

Which of the following consist entirely of scalar quantities: