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4,719 questions

Question 1 of 20 4,719 total questions

Question 151

jamb 2024

A mass of gas at 40mmHg is heated from 298k to 348k at constant volume. Cal the pressure exerted by the gas.

A50.21mmHg

B46.71mmHg

C42.35mmHg

D35.12mmHg

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Question 152

jamb 2024

The energy of light of frequency 2.0 x 10\(^{15}\)Hz is (h = 6.63 x 10\(^{-34}\)Js)

A3.33 x 10\(^{-18}\)J

B1.33 x 10\(^{-18}\)J

C1.33 x 10\(^{-19}\)J

D3.33 x 10\(^{-19}\)J

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Question 153

jamb 2024

How much joules of heat are given out when a piece of iron, of mass 60g and specific heat capacity 460JKg\(^{-1}\)K\(^{-1}\), cools from 75ºC to 35ºC

A1000J

B1050J

C1067J

D1104J

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Question 154

jamb 2024

A thick glass tumbler cracks when boiling water is poured into it because

AThe inside expands more rapidly than the outside

BThe inside expands less rapidly than the outside

CThe expansion is even

DIt does not expand

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Question 155

jamb 2024

Which of the following is not a part of model rocket?

AThe body tube

BThe nose cones

CThe fin

DNot recovery devices

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Question 156

jamb 2024

A sonometer's fundamental note is 50Hz, what is the new frequency when the tension is four times the original?

A25Hz

B100Hz

C200Hz

D250Hz

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Question 157

jamb 2024

288KJ is conducted across two opposite faces of a 3m cube of temperature gradient 90ºCm\(^{-1}\) in 7200s. Calculate the thermal conductivity.

A5.0 x 10\(^{-2}\)Wm\(^{-1}\)k\(^{-1}\)

C5.2 x 10\(^{-2}\)Wm\(^{-1}\)k\(^{-1}\)

D5.1 x 10\(^{-2}\)Wm\(^{-1}\)k\(^{-1}\)

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Question 158

jamb 2024

If a sheet of an insulating material is inserted between the plates of an air capacitor, the capacitance will

Abecome zero

Bdecrease

Cincrease

Dremain unchanged

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Question 159

jamb 2024

The moon's acceleration due to gravity is \(\frac{1}{6}\) of the earth's value. The weight of a bowling ball on the moon would be

A6 times its weight on the earth

B\(\frac{1}{6}\) of its weight on the earth

C36 times its weight on the earth

Dequal to its weight on the earth

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Question 160

jamb 2024

The dimension of young's modulus,E is given by

AMLT\(^{-1}\)

BMT\(^{-2}\)

CML\(^{-1}\)T\(^{-2}\)

DM\(^{-1}\)T

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Question 161

jamb 2024

A rectifier is a device that changes

AD.C to D.C

BD.C to A.C

CA.C to A.C

DA.C to D.C

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Question 162

jamb 2024

In a solar panel, solar beam is concentrated by using

AConcave mirror

BConvex mirror

CPlane mirror

DTriangular mirror

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Question 163

jamb 2024

A wheelbarrow inclined at 60º to the horizontal is pushed with a force of 150N. What is the horizontal component of the applied force

A130N

B75N

C60N

D50N

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Question 164

jamb 2024

Electrolysis can be investigated using

AVoltmeter

BAmmeter

CGalvanometer

DVoltameter

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Question 165

jamb 2024

If the S.V.P of water vapour was 13.5mmHg at 33ºC and 7.3mmHg at 7ºC. Find the percentage relative of the air on a day when average air temperature was 33ºC and dew point was 7ºC.

A55%

B60%

C54%

D51%

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Question 166

jamb 2024

5 X 10\(^{-3}\)kg of liquid at its boiling point is evaporated in 20s by the heat generated by a resistor of 2\(\Omega\) when a current of 10A is used. The specific latent heat of vaporization of the liquid is

A8.0 x 10\(^4\)Jkg\(^{-1}\)

B8.0 x 10\(^5\)Jkg\(^{-1}\)

C8.0 x 10\(^6\)Jkg\(^{-1}\)

D8.0 x 10\(^7\)Jkg\(^{-1}\)

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Question 167

jamb 2024

The value of R required to make the galvanometer measure voltage up to 40V in the diagram above

A1885\(\Omega\)

B1990\(\Omega\)

C1995\(\Omega\)

D1100\(\Omega\)

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Question 168

jamb 2024

A solid cube of aluminum is 1.5cm on each edge. The density of aluminum is 2700kgm\(^{-1}\). Find the mass of the cube.

A7.5g

B9.1g

C12.0g

D15.0g

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Question 169

jamb 2024

A light ray passing from air into water at an angle of 30º from the normal in air would

Amake an angle greater than 30\(^0\) in water surface

Bbe completely absorbed by the water surface

Cbe completely reflected by the water surface

Dmake an angle less than 30\(^0\) from the normal in water

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Question 170

jamb 2024

Pilots uses aneroid barometer to know the height above sea level because

AVery accurate

BSmall and convenient

CHeavy and huge

DCostly

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