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147 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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147 questions

Question 1 of 20 147 total questions

Question 1

neco 2005

The most suitable instrument for measuring the diameter of a thin wire is a

Ameter rule

Bmicrometer screw gauge

Cpair of dividers

Dpair of engineer’s calipers

Evenire calipers

View Explanation & Discuss

Question 2

neco 2005

The wave theory of light does not explain photoelectricity because

Alight waves carry little energy

Bparticles cannot be emitted by waves

Cthe frequency of light waves too high

Dthere is a threshold wavelength for electron emission

Ethe wavelength of Light waves is too short.

View Explanation & Discuss

Question 3

neco 2005

The amplitude of oscillation of a simple pendulum bob diminishes slowly because

Aenergy is applied by some external agencies

Bfrictional forces dissipate the energy of motion

Cthe frequency of oscillation increases with the mass of the bob

Dthe frequency of oscillation varies with time

Ethe period of oscillation varies with time.

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Question 4

neco 2005

Notes of the same frequency sounded on a guitar and trumpet may differ in

I. loudness
II. Pitch
III. quality Which of the statements above is correct?

AI only

BII only

CIII only

DI and II only

EI, II and III

View Explanation & Discuss

Question 5

neco 2005

The motion of the wheel of a bicycle moving on a smooth straight road is

Aoscillatory and random

Boscillatory and translational

Crotational and oscillatory

Drotational and random

Erotational and translational

View Explanation & Discuss

Question 6

neco 2005

Which of the following is NOT a component of a slide projector?

AConcave mirror

BCondenser

CConvex mirror

Dlight source

EScreen.

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Question 7

neco 2005

A constant force acts on a body of mass 50kg and changes its speed from 20ms^-1 to 90ms^-1 in 10 seconds. Calculate the magnitude of the force applied.

A590N

B500N

C450N

D350N

E180N

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Question 8

neco 2005

Three non-parallel coplanar forces which can be represented both in magnitude and direction by the three sides of a triangle taken in order will

Ahave any one force being the equilibrant of the other two

Bmake a body move randomly

Cmake a body oscillate

Dmove a body along a straight line

Erotate a body about its axis

View Explanation & Discuss

Question 9

neco 2005

Radio receivers are tuned using

Aelectromagnets

Belectric motors

CInductors

Dvariable capacitors

Evariable resistors

View Explanation & Discuss

Question 10

neco 2005

An electric motor primary converts

Aelectrical energy to chemical energy

Belectrical energy to heat energy

Celectrical energy to mechanical energy

Dmechanical energy to electrical energy

Emechanical energy to light energy

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Question 11

neco 2005

Which of the following statements is/are correct? Sound waves travel through

I. air
II. vacuum
III.Water

AII only

BI and II only

CII and III only

DI and III only

EI, II, and III

View Explanation & Discuss

Question 12

neco 2005

Which of the following radiations has the shortest wavelength?

AInfrared rays

BLight waves

CMicrowaves

DUltraviolet rays

EX-rays

View Explanation & Discuss

Question 13

neco 2005

Which of the following is/are longitudinal wave(s)?

I. Light waves from the sun
II. Sound waves in the air
III. Waves on a vibrating string

AI only

BII only

CI and II only

DI and III only

EII and III only

View Explanation & Discuss

Question 14

neco 2005

A radio station broadcasts at a frequency of 400 kHz. If the speed of the wave is 3.0 ×10\(^{-8}\)ms\(^{-1}\), calculate the wavelength of the radio wave.

A1.3 × 10²m

B3.0 × 10²m

C2.4 × 10²m

D5.0 × 10²m

E7.5 × 10^-14m

View Explanation & Discuss

Question 15

neco 2005

A box is pulled a distance s along a smooth horizontal floor by a force of magnitude F, inclined at an angle θ to the horizontal. The work done is

AFs cos θ

BFs cosec θ

CFs sec θ

DFs sin θ

EFs tan θ

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Question 16

neco 2005

Which of the following will reduce the frequency of oscillation of a simple pendulum?

ADecreasing the length of the string

BIncreasing the amplitude of oscillation

CIncreasing the length of the string

DIncreasing the mass of the bob

EReducing the mass of the bob.

View Explanation & Discuss

Question 17

neco 2005

Which of the following statements is correct?

AAlpha particles have a large mass and high penetrating power

BAlpha particles have a small mass and a low penetrating power

CBeta partials have no mass and a high penetrating power

DBeta particles have a large mass and a low penetrating power

EGamma rays have no mass and a high penetrating power

View Explanation & Discuss

Question 18

neco 2005

The charge of an alpha particle can be neutralized by

A1 beta particle

B2 photons of gamma rays

C2 beta particles

D4 beta particles

E4 photons of gamma rays

View Explanation & Discuss

Question 19

neco 2005

Which of the following is used for shielding radioactive fallout?

AAluminum

BLead

CIron

DPlastic

EWood

View Explanation & Discuss

Question 20

neco 2005

Which of the following is a percussion Instrument?

AFlute

BGuitar

CPiano

DTrumpet

EXylophone

View Explanation & Discuss

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