ChallengeMoi

New skills to acquire as companies continue to retrench staff

The way companies retrench their staff these days is very alarming. The reason(s) best known to them. And some of…

WAEC – CRK – 1997

This quiz consist of over 50 WAEC CRK past questions and answers. The answers are well explained with scriptural references.…

NDA – History – 2002

This quiz consist of over 50 NDA History past questions and answers. The answers are well explained. Retake the quiz…

NDA – Geography – 2003

This quiz consist of over 50 NDA Geography past questions and answers. The answers are well explained. Retake the quiz…

WAEC – Biology – 1988

This quiz consist of over 50 WAEC Biology past questions and answers. The answers are well explained with scriptural references.…

WAEC – CRK – 1994

This quiz consist of over 50 WAEC CRK past questions and answers. The answers are well explained with scriptural references.…

WAEC – Biology – 1996

This quiz consist of over 50 WAEC Biology past questions and answers. The answers are well explained with scriptural references.…

JAMB-Government-1990

This quiz consists of over 50 JAMB Government past questions and answers. The answers are well explained. Retake the quiz…

NDA – Physics – 2002

This is a timed quiz. You will be given 1200 seconds to answer all questions. Are you ready?

Begin!

1200

A catapult is used to project a stone. Which of the following energy conversions take place as stone released?

The elastic P.E Of' the catapult is converted into gravitational PE

Both A, B and C

The K.E of the stone is converted to P.E

The elastic P.E of the catapult is converted into K-E

Correct! Wrong!

A 20m steel wire is stretched to 20.0/m by the application of a force of 50N. What force should be applied to stretch the wire to 20.05m within its elastic limits?

40,000N

Correct! Wrong!

A 15m metallic rod expanded to 15.03m when heated from 10^o to 110^o. The linear expansivity of the metaIs is

2 x 10^-6k^-1

6.2 x 10^-6k^-1

2 x 10^-5k^-1

0.5 x 10^-6k^-1

Correct! Wrong!

What is the pressure exerted by the boy weighing 80Kg on the ground when he stands on his feet whose area is 200cm²

16000pa

80pa

400pa

40,000pa

Correct! Wrong!

The Joule (J) as the unit of work is equivalent to:

NMS^-2

Nm^-2

Nm

KgmS^-2

Correct! Wrong!

When the wet bulb and dry bulb thermometers of a hygrometer shows almost the same reason , then we assume that:

The rain is imminent as the atmosphere is very nearly saturated with water vapour

There is a fair amount of wind blowing in the atmosphere

The relative humidity is rather low

Only very small amount of water vapour is present in the atmosphere.

Correct! Wrong!

Which of the following is the reason why a pressure cooker is used in cooking?

As the pressure inside the cooker is high, water boils at a lower temperature which makes cooking faster

In a pressure cooker, cooking is done in steam which has a higher temperature than water

As no heat is allowed to escape, cooking is faster

Water boils at a lower temperature which makes cooking fast

Correct! Wrong!

Which of the following prevents the escape of heat by radiation?

The double walled container

The vacuum between the walls

The outer casing of the flask

Correct! Wrong!

A force of 100N makes an angle of q with the x-axis and has y - component of 30N. Find both the X component of the force and the angle q

75.4N 17.5^o

95.4N 17.5^o

85.6N 17.5^o

95.4N 18.5^o

Correct! Wrong!

A plane inclined at an angle of 30^o to the horizontal has an efficiency of 50%. The force parallel to the plane required to push a load of 100 uniformly up the plane is

10N

120N

200N

60N

Correct! Wrong!

A 60g tennis ball travelling at 30m/s hits a wall and bounces back at 20m/s. Calculate the change in momentum of the ball.

3kgms^-1

1.2kgms^-1

-1.2kgms^-1

1.8kgms^-1

Correct! Wrong!

If a freely suspended object is pulled to one side and left, it oscillates about the Point of suspension, This is because of the

Work done in lifting the object

Acceleration due to gravity

Weight of the object

Moment of its weight about the point of suspension

Correct! Wrong!

The following are derived units except

N

Kg

Kg/m³

M³

Correct! Wrong!

Which of the following statements is true of the vector shown below?

Y is the resultant of X and Y

Z is the equilibrium of X and Y

X is the resultant of Z and Y

Z is the resultant of X and Y

Correct! Wrong!

5000J of work done on a machine results in lifting a load Of 800N through a distance of 5.0m. The efficiency of the machine in % is

100

90

80

70

Correct! Wrong!

A boy throws a stone up to a height of 10m and catches it back. What is the displacement of the stone (assume the hand remains at the same level of throw and at catch)

20m

30m

0m

10m

Correct! Wrong!

An objects starts from rest and move with a uniform acceleration. Which of these quantities varies/vary directly with time?
I. Velocity II. Displacement III. Acceleration

II only

I only

I and II only

III only

Correct! Wrong!

For the lower shown in the figure below, determine the vertical force F required to support the load W = 90N. Neglecting the weight of lever

20N

45N

10N

30N

Correct! Wrong!

The efficiency of a machine and the velocity ratio are respectively 800% and 5. How much is load is this machine capable Of lifting by the application of an effort of 500N?

2000N

2950N

2800N

2500N

Correct! Wrong!

A given mass of gas has a pressure of 800Nm^-2 at a temperature of 47^oC. If the temperature reduce to 27^oC with the volume remaining constant, the new pressure is

70.0Nm^-2

46.0Nm^-2

80.0Nm^-2

139.4Nm^-2

Correct! Wrong!

Which of the following best explains why a person suffers a severe burns when his skin is exposed to steam than when boiling water is poured on his skin?

The specific latent heat of vaporization is released in changing from boiling water steam.

Steam is at a higher temperature than boiling water

steam possesses greater heat energy than boiling water

Steam penetrates more deeply than into the skin than boiling water.

Correct! Wrong!

A vernier scale was formed by dividing a length of 19mm into 20 equal parts. If this vernier is used with a main scale marked in mm, the smallest distance that can be measured using this combination is:

0.005mm

0.05mm

0.5mm

0.1mm

Correct! Wrong!

A girl whose mass is 55kg stands on a spring weighing machine inside a lift. When the lift starts to ascent, its acceleration is 2ms^-1. What will be the reading on the machine?

66kg

55kg

44kg

33kg

Correct! Wrong!

A man walks 10km due south. The displacement of the man from the initial position is

20km North

22.36km 63.4 south of east

10km south

27.6km 300N of East

Correct! Wrong!

Which of the following physical quantities is a vector?

The wind

The direction East

The displacement of an object

The direction of a car

Correct! Wrong!

Which of the following is true of the force diagram below?

T₁/sin90 = W/sin37

T₁/sin90 = T₂/sin37

T₁/sin90 = T₂/sin53

W/sin90 = T₂/sin37

Correct! Wrong!

Which of the following readings cannot be determined by a meter rule?

2.50cm

2.56cm

2.55cm

2.05cm

Correct! Wrong!

A boy pushes a 50kg box along a floor with a force of 200N. If the velocity of the box is uniform, the coefficient friction between the box and the floor is

0.4

0.5

0.8

1

Correct! Wrong!

A boy weighting 400N clears 1.5m in a high jump competition. How much of his energy does he convert into potential energy when he is at the highest point (g = 10m/s²)

750J

600J

650J

800J

Correct! Wrong!

Uniformly retarded object comes to rest in 20s after travelling a distance of 40m. Calculate the initial velocity of the object

1.0m/s

8.0m/s

4.0m/s

3.0m/s

Correct! Wrong!

Which of the following properties is common to energy transfer by waves and by particles.

Polarization

Interference

Refraction

Diffraction

Correct! Wrong!

A certain force acting on an object changes its momentum from 100Ns to 350 NS in 10s. The magnitude of the force is

20N

25N

15N

10N

Correct! Wrong!

A ball of mass 0.5kg hits a wall at right angle with a velocity of 10m/s and rebounds with a velocity 8m/s. If the wall was in contact with the ball for 0.2s, the force applied by the wall is

45N

40N

5N

30N

Correct! Wrong!

An object of mass 05kg has a kinetic energy of 25J. Its velocity in m/s is equal to

20

30

10

40

Correct! Wrong!

A stone is thrown horizontally from the top of a tall building with a velocity of 10m/s. If the stone falls at a distance of 50 m from the foot of the building, calculate the height of the building,

75m

125m

100m

150m

Correct! Wrong!

A column of CuCl₂ solution of height 50cm and a column of water 60cm are supported by the same pressure. What is the relative density of CuCl₂ solution?

1.0

0.5

1.2

1.5

Correct! Wrong!

A machine which is 80% efficient lifts a load Of 1000N with the application of a force of 1000. What is the velocity ratio of this machine?

80

10

1.25

20

Correct! Wrong!

NDA - Physics - 2002

You're a Champion!

You just earned a seat in the First Class. Congrats!

Hello Buddy! You did well but you can do more.

You performed averagely in this course. You can do better.

Hmmmm... Good is not good enough

Your performance wasn't too encouraging. We're certain you'll do better after taking this course a couple of times

Share your Results:

Facebook Twitter

  Play Again!

WAEC – Chemistry- 1989

This quiz consists of over 50 WAEC Chemistry past questions and answers. The answers are well explained. Retake the quiz…