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2,483 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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2,483 questions

Question 1 of 20 2,483 total questions

Question 1001

jamb 1988

A tap supplies water at 25^oC while another supplies water at 75^oC. If a man wishes to bathe with water at 40^oC, the ratio of the mass of cold water to the mass of hot water required is

A1 : 3

B15 : 8

C7 : 3

D3 : 1

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Question 1002

jamb 1988

The amount of heat needed to raise the temperature of 10kg of copper by 1k is its

Aspecific heat capacity

Bheat capacity

Clatent heat

Dinternal energy

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Question 1003

jamb 1988

The product PV where P is pressure and V is volume has the same unit as

Aforce

Bpower

Cenergy

Daccelaration

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Question 1004

jamb 1988

A body whose mass is 2kg and has a volume of 500cm3 just floats when completely immersed in a liquid. Calculate the density of the liquid

A4.0 x 10²kgm^-3

B4.0 x 10³kgm^-3

C1.0 x 10³kgm^-3

D1.0 x 10⁶kgm^-3

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Question 1005

jamb 1988

A force, 10N, drags a mass 10kg on a horizontal table with an acceleration of 0.2ms. If the acceleration due to gravity is 10ms-1, the coefficient of friction between the moving mass and the table is

A0.02

B0.08

C0.20

D0.80

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Question 1006

jamb 1988

How long will it take a 60kg man to climb a height of 22m if he expended energy at a rate of 0.25kW. [g = ms^-2]

A5.3s

B34.5s

C41.6s

D52.8s

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Question 1007

jamb 1988

A 20-toothed gear wheel drives a 60-toothed one. If the angular speed of the smaller wheel is 120 rev s^-1, the angular speed of the larger wheel is

A3 rev s^-1

B40 rev s^-1

C360 rev s^-1

D2400 rev s^-1

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Question 1008

jamb 1988

A particle starts from rest and moves with a constant acceleration of 0.5ms\(^{-2}\). The distance covered by the particle in 10s is?

A2.5m

B5.0m

C25.0m

D50.0m

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Question 1009

jamb 1988

When taking a penalty kick, a footballer applies a force of 30.0N for a period of 0.05s. if the mass of the ball is 0.075kg, calculate the speed with which the ball moves off.

A4.50ms^-1

B11.25ms^-1

C20.00ms^-1

D45.00ms^-1

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Question 1010

jamb 1988

Which of the following quantities are scalars? i. Electrical potential ii. Torque iii. Momentum iv. Kinetic energy

Aii and iii only

Bi and ii only

Ciii and iv only

Di and iv only

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Question 1011

jamb 1988

Two forces whose resultant is 100N, are at right angle to each other. If one of them makes an angle 30^o with the resultant, determine its magnitude.

A8.66N

B50.0N

C57.7N

D86.6N

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Question 1012

jamb 1988

A lorry travels 10km northwards, 4km eastwards, 6km southwards, 4km westwards to arrive at a point T. What is the total displacement?

A6km south

B4km north

C6km north

D4km east

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Question 1013

jamb 1988

Which of the following are the correct SI units of the quantities indicated? i.N(Force) II. N/m (Torque) iii. watt(Power) iv. kgms-2(Momentum)

Ai and ii only

Bi, ii and iii only

Ci, ii, and iv only

Di and iii only

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Question 1014

jamb 1987

In the fig above, M and N are insulated metal spheres in contact. A negatively charged ebonite rod P is I brought near M. When M and N are Separated and the rod is taken away, which of the following statements is correct

Aboth M and N have acquired negative charges

Bboth M and N have acquired positive charges

CM has acquired negative charge and N positive charge

DN has acquired negative charge and M positive charge

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Question 1015

jamb 1987

In the above, a voltage V is applied across the terminals P and Q. The voltage across the 1 ohm resistor is

AV/8

BV/4

CV/3

DV/2

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Question 1016

jamb 1987

fig above represents the main sequence of energy conversion at kainji dam. what is the efficiency of the system?

A\(\frac{Q_1}{Q_2}\)

B\(\frac{E}{Q_1}\)

C\(\frac{E}{Q_1 - Q_2}\)

D\(\frac{E}{Q_1 + Q_2}\)

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Question 1017

jamb 1987

A 50kg block is dropped from a point 10m above, as shown in the figure above. if the force constant of the spring is 4.0 x 10\(^4\)Nm-1, find the maximum compression of the spring. [g = 10ms\(^{-2}\)]

A1.25m

B0.50m

C0.25m

D0.05m

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Question 1018

jamb 1987

the fig above shows two connected bodies of masses M\(_1\) and M\(_2\) in equilibrium under gravity. The tension in the upper string is

A(m\(_1\)-m\(_2\))g

Bm\(_1\)g

Cm\(_2\)g

D(m\(_1\)+m\(_2\))g

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Question 1019

jamb 1987

The velocity time graph above describes the motion of a particle between two points P and Q. What is the distance between P and Q?

A17.0m

B18.0m

C22.5m

D30.0m

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Question 1020

jamb 1987

A radioactive sample initially contains N atoms. After three half-lives the number of atoms that have disintegrated is

A\(\frac{N}{8}\)

B\(\frac{3N}{8}\)

C\(\frac{5N}{8}\)

D\(\frac{7N}{8}\)

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