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95 questions

Question 1 of 20 95 total questions

Question 31

jamb 2016

Which of the following instruments can be used to measure current in an a.c circuit?

AHot wire ammeter

BMoving coil ammeter

CTangent galvanometer

DMoving coil galvanometer

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Question 32

jamb 2016

Which of the following is obtained when a magenta is mixed with green colour?

AYellow

BBlue

CWhite

DRed

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Question 33

jamb 2016

Shadows and eclipse result from the

AReflection of light

BRectilinear propagation of light

CDiffraction of light

DRefraction of light

View Explanation & Discuss

Question 34

jamb 2016

A pool of water appears to be 1.00m deep when viewed vertically from above. What is the actual depth of the pool?
[Refractive index of water = 1.33]

A13.300m

B0.750m

C1.013m

D1.330m

View Explanation & Discuss

Question 35

jamb 2016

Vapour is said to be saturated on top of an enclosed liquid if _________

AThe rate of condensation is greater than that of vapourization

BThe rate of condensation is equal to that of vapourization

CThere is neither condensation nor vaporization of the liquid

DThe rate of condensation is less that that of vaporization

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Question 36

jamb 2016

Which of the following does Not use magnetic effect of current to function?

ALead acid accumulator

BAn electric bell

CA moving coil galvanometer

DA telephone receiver

View Explanation & Discuss

Question 37

jamb 2016

What will happen to the pressure of a gas if its temperature is reduced to -273^oC?

AIt will decrease

Bit will drop to zero

CIt will increase

DIt will remain constant

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Question 38

jamb 2016

The relative density of a liquid is the ratio of the

AMass of water to the mass of an equal volume of liquid

BUpthrust in the liquid to the upthrust in water

CDensity of water to the density of the liquid

DUpthrust in water to the upthrust in the liquid

View Explanation & Discuss

Question 39

jamb 2016

Calculate the temperature of 6 moles of an ideal gas at a pressure of 7.6 x 10⁶Nm^-2 with a volume of 10^-3m³.
[R = 8.3jmol^-1K^-1]

A201^oC

B126^oC

C153^oC

D185^oC

View Explanation & Discuss

Question 40

jamb 2016

Which of the following waves is both transverse and mechanical?

AWater waves

BRadio waves

CSound waves

DX-rays

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Question 41

jamb 2016

A radioactive isotope has a decay constant of 10\(^{-6}\)s\(^{-1}\). Calculate its half-life.

A5.93 x 10⁶s

B6.93 x 10⁵s

C6.93 x 10⁹s

D5.93 x 10⁷s

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Question 42

jamb 2016

Which of the following electromagnetic waves has the shortest wavelength?

AVisible Light

BUltraviolet rays

CInfrared rays

DGamma rays

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Question 43

jamb 2016

A train with an initial velocity of 20ms^-1 is subjected to a uniform deceleration of 2ms^-2. The time required to bring the train to a complete halt is

A40s

B10s

C20s

D5s

View Explanation & Discuss

Question 44

jamb 2016

A projectile is fired from the ground level with a velocity of 300ms-1 at an angle of a 30o to the horizontal.
Calculate the time taken to reach the maximum height?
[g = 10ms-2]

A30s

B20s

C25s

D15s

View Explanation & Discuss

Question 45

jamb 2016

A metre rule is pivoted at its mid-point with a vertical force of 10N hanging from the distance 30cm from the mid-point. At what distance must a 15N force hang to balance the ruler horizontally?

A30cm

B10cm

C20cm

D25m

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Question 46

jamb 2016

What force has to be exerted on a mass 60kg to give it an acceleration of 10ms^-2 vertically upwards?
[g = 10ms^-2

A300N

B600N

C1200N

D400N

View Explanation & Discuss

Question 47

jamb 2016

A saturated vapour pressure of a liquid increases when the

ATemperature of a liquid increases

BVolume of the liquid increases

CVolume of the liquid decreases

DTemperature of the liquid decreases

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Question 48

jamb 2016

A dynamo primarily converts

AMechanical energy into electrical energy

BElectrical energy into kinetic energy

CPotential energy into kinetic energy

DKinetic energy into potential energy

View Explanation & Discuss

Question 49

jamb 2016

Which of the following statements is NOT correct?

ABrownian motion is an evidence of the particle nature of matter

BAtoms combine to form molecules

CThe molecules of matter are not in constant motion

Dmatter is made up of molecules

View Explanation & Discuss

Question 50

jamb 2016

Semiconductor is a class of solid whose conductivity increases with an increase in

APressure

BTemperature

CCurrent

DVoltage

View Explanation & Discuss

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