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48 questions

Question 1 of 20 48 total questions

Question 11

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 12

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 13

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 14

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

View Explanation & Discuss

Question 15

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 16

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

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Question 17

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

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Question 18

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

View Explanation & Discuss

Question 19

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

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Question 20

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 21

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

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Question 22

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

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Question 23

jamb 2016

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

APressure

BTemperature

CCurrent

DVoltage

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Question 24

jamb 2016

A boy in a barber's shop sits between two parallel mirrors. The number of images observed by him will be

AInfinite

BTen

CEight

DForty

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Question 25

jamb 2016

The heat required to raise a mass of a substance through 1K is known as

ASpecific heat capacity

BSpecific latent heat of vaporization

CCapacity latent heat of fusion

DHeat capacity

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Question 26

jamb 2016

The rate of cooling of a heated quantity of liquid in an enclosure depends on the

APressure of the liquid

BTemperature in the enclosure

CPressure of the enclosure

DVolume of the liquid

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Question 27

jamb 2016

When an athlete perspires after running, he loses heat through

AEvaporation

BConduction

CRadiation

DConvection

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Question 28

jamb 2016

A wire of length 10m is cooled from 50oC to 10oC. Calculate the decrease in the length of the wire. [c = 3 x 10-5K-1]

A1.8 x 10^-4m

B1.5 x 10^-4m

C1.2 x 10^-2m

D1.8 x 10^-3m

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Question 29

jamb 2016

What is the angular magnification of a telescope having objective and eyepiece lenses of a focal lengths 30cm and 3cm respectively?

A60

B10

C30

D90

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Question 30

jamb 2016

The instrument used to view stars is the

APrism binoculars

BTelescope

CFilm projector

DMicroscope

View Explanation & Discuss

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