Physics Past Questions

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96 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10
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Past Questions

96 questions
Question 1 of 16 96 total questions
Question 41
jamb 2008

A block of aluminum is heated electrically by a 25 W heater. if the temperature rises by 10°C in 5 minutes, the heat capacity of the aluminum is?

A850 JK-1
B750 JK-1
C650 JK-1
D500 JK-1
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Question 42
jamb 2008

A sealed flask contains 600cm3 of air at 27°C and is heated to 35°C at constant pressure. The new volume is?

A508 cm3
B516 cm3
C608 cm3
D616 cm3
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Question 43
jamb 2008

During summer, the balance wheel of a clock expands.what effect does this have on the accuracy of the clock?

Athe clock gians time
Bthe accuracy of the clock is not affected
Cthe clock losses time
Dthe clock stops working
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Question 44
jamb 2008

The thermometric properties of a thermocouple is the change in?

Aequivalent resistance
Belectromotive force
Ccolour
Dpressure
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Question 45
jamb 2008

An empty density bottle weighs 2 N. if it weighs 5 N when filled with water and 4 N when filled with olive oil, the relative density of olive oil is?

A(1)/3
B(2)/3
C(1)/5
D(2)/5
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Question 46
jamb 2008

When cold water is poured on a can containing hot water, the can collapses because the?

Asteam condeses and occupies the partial vacuum in the can
Bexternal air pressure counter balances the pressure within the can
Csteam expands to occupy the vacuum remaining in the can
Dexternal pressure becomes greater than the pressure within the can.
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Question 47
jamb 2008
In the hare's apparatus, water rises to a height of 26.5 cm in one limb. if a liquid rises to a height of 20.4 cm in the other limb, what is the relative density of the liquid?
A0.8
B1.1
C1.2
D1.3
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Question 48
jamb 2008

A spring of force constant 500 Nm\(^{-1}\) is compressed such that its length shortens by 5cm. The energy stored in the spring is?

A0.625 J
B6.250 J
C62.500 J
D625.000 J
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Question 49
jamb 2008

A motorcycle of mass 100kg moves round in a circle of radius 10m with a velocity of 5 ms\(^{-1}\). find the coefficient of friction between the road and the tyres.

 

A25.00
B2.50
C0.50
D0.25
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Question 50
jamb 2008

Counting of currency notes with moist fingers is based on the principles of?

Adiffusion
Bcohesion
Cadhesion
Dviscosity
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Question 51
jamb 2008

If a body mass 5kg is thrown vertically upwards with velocity u,at what height will the potential energy equal to the kinetic energy?

Ah =(u)2/g
Bh = (u)2/4g
Ch = (2u)2/g
Dh = (u)2/2g
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Question 52
jamb 2008

What is the frequency of vibration if the balance wheel of a wrist watch makes 90 revolutions in 25 s?

A0.01 Hz
B0.04 Hz
C2.27 Hz
D3.60 Hz
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Question 53
jamb 2008

I. All the three forces must be concurrent.
II. The upward force is equal to the downward force.
III. The algebraic sum of the moment about any point must be zero.

which of the above conditions must hold for a body acted upon by a system of three coplanar forces equilibrium?

AI and II only
BI and III only
CII and III only
DI, II and III
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Question 54
jamb 2008

If a wheel 1.2 m in diameter rotates at one revolution per second, calculate the velocity of the wheel.

A3.6 ms-1
B3.77 ms-1
C4.0 ms-1
D7.5 ms-1
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Question 55
jamb 2008
Which of the following is NOT a vector quantity?
Aaltitude
Bacceleration
Cdisplacement
Dweight
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Question 56
jamb 2008

I. Force (N)
II.Torque (Nm)
III. Current (A)
IV. Power (W)
Which of the above are the correct S. I: units of the quantities indicated?

AI and II only
BI and III only
CI, II and III only
DI, II, III and IV only
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