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154 questions

Question 1 of 20 154 total questions

Question 31

jamb 2025

The gravitational force between two masses, P and Q, is 10N, find the new value of the force if both masses are doubled

A40.0N

B20.0N

C10.0N

D2.5N

View Explanation & Discuss

Question 32

jamb 2025

A gas is cooled at a constant pressure from 57ºC was observed to shrink one-fifth (1\5) of its original volume of 2.00cm\(^3\). Find its new temperature

A-150\(^o\)C

B-207\(^0\)C

C-195\(^0\)C

D-200\(^0\)C

View Explanation & Discuss

Question 33

jamb 2025

A boat or airplane has a pointed front or head. This is to

AReduce the friction of fluid

BEnables it to stop anytime

CIncreased the friction of fluid

DLook good

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Question 34

jamb 2025

If the weight of an object on the Earth's surface is 2.5 x 10\(^3\)N, what is its weight on the moon's surface if the gravitational force of the moon is one-sixth of the Earth's(g = 10m/s\(^{-2}\))

A360.87N

B416.67N

C214.49N

D510.79N

View Explanation & Discuss

Question 35

jamb 2025

If a positively charged rod is brought close to the cap in the diagram above, the divergence

Ais unchanged

BIncreases

Cdecreases

DCollapses

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Question 36

jamb 2025

An annular eclipse is formed when

AThe sun, moon, and earth comes in straight line

BOne of the sun, moon, and earth are not visible

CTwo or more stars gathered together

DThe Earth comes between the moon and the sun

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Question 37

jamb 2025

The focal length of the natural eye lens is variable due to the action of the

AOptical fluid

BCiliary muscle

CVitreous humor

Dretina nerves

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Question 38

jamb 2025

Two identical cells, each of emf 1.5V and internal resistance 1\(\Omega\), are connected in parallel to supply current to a 2 \(\Omega\) resistor. What is the total current

AO.8A

B1.0A

C0.4A

D0.6A

View Explanation & Discuss

Question 39

jamb 2025

When capacitors are connected in series across a potential difference, there is a loss in their stored energy because:

AIncrease in the internal resistance of the voltage

BUnequal charges being deposited on the capacitors

Ca charge flows between the capacitors

Ddecrease in the overall capacitance of the capacitors

View Explanation & Discuss

Question 40

jamb 2025

If 10 objects, tinsels are placed between the mirror of a Kaleidoscope with an inclination of 30º, how many images are formed?

A110

B181

C142

D210

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Question 41

jamb 2025

What colour has the lowest frequency in the spectrum of white light?

ARed

BYellow

CIndigo

DBlue

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Question 42

jamb 2025

The distance between two successive trough points of a wave is

Atwo wavelength

Ba wavelength

Cone third wavelength

Dhalf wavelength

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Question 43

jamb 2025

The acceleration of the body given above ( upthrust = 10N)

A10.0m/s\(^2\)

B20.0m/s\(^2\)

C7.5m/s\(^2\)

D6.8m/s\(^2\)

View Explanation & Discuss

Question 44

jamb 2025

Which of the following is a basic Unit?

AJoule

BVolt

COhm

DAmpere

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Question 45

jamb 2025

In electromagnetic induction, the generated electricity is actually a voltage called

AInduced emf

BEddy current

CInductor voltage

DWatts

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Question 46

jamb 2025

What is the electrolyte used in wet Leclanche cell

ANickle hydroxide

BLead dioxide

CAmmonium chloride

DCarbon

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Question 47

jamb 2025

One of the following is not a radiation detector

AElectrophorus

BScintillation chamber

CGeiger muller counter

DFilm badge

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Question 48

jamb 2025

The commonly used materials for shielding or screening magnetism is

AAlumumium

BBrass

CSoft iron

DCopper

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Question 49

jamb 2025

A refrigerator uses 150W. If it is kept on for 336 hours nonstop. What is the energy consumed in Kwh?

A60.20Kwh

B25.01Kwh

C50.40Kwh

D30.20Kwh

View Explanation & Discuss

Question 50

jamb 2025

A short-sighted person's far point is 95cm. The defect can be corrected using

ADiverging mirror of focal length 95cm

BPlano convex lens of focal length 90cm

CDiverging lens of focal length 95cm

DConverging lens of focal length 95cm

View Explanation & Discuss

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