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Physics Past Questions

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322 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10

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322 questions

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Question 41

neco 2005

A stone of mass 0.7 kg is projected vertically upward with a speed of 5 ms-1. Calculate the maximum height reached. [g =10ms^-2]

A1.25m

B1.50m

C2.50m

D3.75m

E5.00Nm

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Question 42

neco 2005

A projectile is projected with an initial velocity u, at an angle θ to the horizontal. The maximum height attained is.

AU² sin \(\frac{\theta}{g}\)

B2U² sin² \(\frac{\theta}{g}\)

CU sin² \(\frac{\theta}{g}\)

DU² sin²\(\frac{\theta}{2g}\)

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Question 43

neco 2005

Which of the following is a desirable property of a fuse Wire?

AHigh expansively

BHigh thermal conductivity

CLow density

DLow electrical resistivity

ELow melting point

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Question 44

neco 2005

In which of the following is the expansion of solids a disadvantage?

AElectric iron

BFire alarm

CThe balance wheel of a watch

DThe bimetallic thermometer

EThe fitting of wheels in rims

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Question 45

neco 2005

A 12V battery supplies a current of 0.4A to a lamp. Calculate the resistance of the lamp.

A30.00

B4.80

C3.00

D0.30

E0.03

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Question 46

neco 2005

The following are derived units EXCEPT

Akg m^-3

CNs

Dm³

Ekg

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Question 47

neco 2005

An atom radiates 1.5 × 10^-19J when an electron jumps from one level to another. What is the wavelength of the emitted radiation? (Planck’s constant 6.6 × l0^-34Js ; Speed of light in vacuum = 3.0 × 108ms^-1)

A1.32 × 10^-6m

B2.97 × 10^-6m

C3.30 × 10^-6m

D6.82 × 10^-6m

E8.01 × 10m^-6

View Explanation & Discuss

Question 48

neco 2005

491 K is equivalent to

A273 °C

B218 °C

C373 °C

D491 °C

E764 °C

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Question 49

neco 2005

Which of the statements is/are true of two bodies involved in an inelastic collision? After collision.

I. the kinetic energy increases
II. The momentum decreases
III. Their velocities are the same.

AI only

BII Only

CIII only

DI and II only

EII and III only

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Question 50

neco 2005

A body moves along a circular path with uniform angular speed of 0.6 rad s^-1 and at a constant speed of 3.0 ms^-1.

Calculate the acceleration of the body towards the centre of the circle.

A0.2.ms^-2

B1.8 ms^-2

C5.0 ms^-2

D5.4 ms^-2

E25.0 ms^-2

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Question 51

neco 2005

An object is placed in front of a concave mirror whose radius of curvature is 12cm. If the magnification of the Image produced is 1.5, how far is the object from the mirror?

A8cm

B10cm

C15cm

D18cm

E20cm

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Question 52

neco 2005

The angle between the geographic and the magnetic meridians at a place on the earth’s surface is the

Aangle of declination

Bangle of depression

Cangle of dip.

Dlatitude of the place

Elongitude of the place

View Explanation & Discuss

Question 53

neco 2004

A resistor connected in parallel with a galvanometer so that a large amount of current can be measured is called a/an

Aammeter

Bavometer

Ccoil resistor

Dmultiplier

Eshunt.

View Explanation & Discuss

Question 54

neco 2004

The relative density of dilute tetraoxosulphate (vi) acid in a battery is measured with a

Abarometer

Bhydrometer

Cmanometer

Dhypsometer

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Question 55

neco 2004

Calculate the energy stored in an inductor of inductance 0.5H when a current of 3A flows through it.

A15.00 J

B9.45 J

C6.00 J

D4.50J

E2.25 J

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Question 56

neco 2004

A ray of light experiences a minimum deviation when passing through an equilateral triangular glass prism. Calculate the angle of incidence of the ray. [Refractive index of glass = 1.5]

A300.0°

B48.6°

C60.0°

D75.5°

E105.0 °

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Question 57

neco 2004

The resultant of two forces P and Q is least when the angle between them is

A0°

B45°

C60°

D90°

E180°

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Question 58

neco 2004

If the distance between the plates of a parallel plate capacitor is decreased, its capacitance

Abecomes zero

Bdecreases

Cincreases

Dis halved

Eremains the same

View Explanation & Discuss

Question 59

neco 2004

A radioactive isotope has a half-life of 8 days. What fraction of the atoms will remain after 72 days?

A9.766 × 10^-4

B1.736 ×10^-3

C1.953 ×10^-3

D3.472 × 10^-3

E3.906 x 10^-3

View Explanation & Discuss

Question 60

neco 2004

Which of the following is used as a depolarizer in a Denial cell?

AAmmonium chloride

BCopper (II) tetra Oxo sulphate (VI) solution

CManganese (IV) oxide

DTetraoxo sulphate (VI) acid

EWater

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