Physics Past Questions

Updated description

4,719 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10
Download PHP app Ask a Question Check Syllabus Past Question Videos Topic Video Lessons

Take a test

Past Questions

4,719 questions
Question 1 of 20 4,719 total questions
Question 1821
jamb 1994
Calculate the magnitude of the force required to just move a 20kg object along a horizontal surface if the coefficient of friction is 0.2. [g = 10ms-2]
A400.0N
B40.0N
C4.0N
D0.4N
View Explanation & Discuss
Question 1822
jamb 1994
A cone in an unstable equilibrium has its potential energy
Adecreased
Bincreased
Cunchanged
Doscillating
View Explanation & Discuss
Question 1823
jamb 1994
An object of mass 50kg is released from a height of 2m.Find the kinetic energy just before it strikes the ground
A250J
B1000J
C10 000J
D100 000J
View Explanation & Discuss
Question 1824
jamb 1994

Which of the following is TRUE of a particle moving in a horizontal circle with constant angular velocity?

AThe energy is costant but the linear momentum varies
BThe linear momentum is conatant but the energy varies
Cboth energy and linear momentum are constant
DThe speed and the linear velocity are both constant
View Explanation & Discuss
Question 1825
jamb 1994
A motor vehicle is brought to rest from a speed of 15ms-1 in 20 seconds. Calculate the retardation.
A0.75ms-1
B1.33ms-2
C5.00ms-2
D7.50ms-2
View Explanation & Discuss
Question 1826
jamb 1994
An object is projected with a velocity of 80ms-1 at an angle of 30o to the horizontal.The maximum height reached is
A20m
B80m
C160m
D320m
View Explanation & Discuss
Question 1827
jamb 1994

A boat travels due east at a speed 40ms\(^{-1}\)s across a river flow due south at 30ms\(^{-1}\)s. What is the resultant speed of the boat?

A1.3ms-1
B10.0ms-1
C50.0ms-1
D70.0ms-1
View Explanation & Discuss
Question 1828
jamb 1994

If it takes 5.0 hrs to drain a container of 540.0m\(^3\) of water, what is the flow rate of water from the container in kgs\(^{-1}\)? [Density of water = 1000kgm\(^{-3}\)]

A32.5kg-1 s
B31.5kg-1
C30.8kg-1 s
D30.0kg-1 s
View Explanation & Discuss
Question 1829
waec 1993
Which of the following are emitted from a radioactive substance without altering either the nucleon number or the proton number of the substance?
AGamma rays
BAlpha particles
CBeta particles
DProtons
ENeutrons
View Explanation & Discuss
Question 1830
waec 1993
When an atom is in the ground state, it is said to be
Agrounded
Bexcited
Cstable
Dionized
Eradiating
View Explanation & Discuss
Question 1831
waec 1993
Eight or - particles and size B - particles are emitted from an atom of 92238U before it achieves stability. What is the nucleon number of the final product in the chain reaction?
A206
B234
C238
D240
E252
View Explanation & Discuss
Question 1832
waec 1993
According to the kinetic theory of gases the collision
of the molecules of a gas with the wall of the container
is mainly responsible for the l. temperature of the
gas ll. viscosity of the gas Ill. pressure of the gas
Which of the statements above is/are correct?
AI only
BII only
CIII only
DII and III only
EI, II and III.
View Explanation & Discuss
Question 1833
waec 1993

Which of the following is used a nuclear reactor to slow down fast moving neutrons?

ACarbondioxide gas
BLiquid sodium metal
CConcrete shield
DGraphite rods
EBoron rods
View Explanation & Discuss
Question 1834
waec 1993

A radioactive substance has a half-life of 20 hours. What fraction of the original radioactive nuclide will remain after 80 hours?

A1/32
B\(\frac{1}{16}\)
C\(\frac{1}{8}\)
D\(\frac{1}{4}\)
E\(\frac{1}{2}\)
View Explanation & Discuss
Question 1835
waec 1993
The phenomenon of radioactivity was first discovered by
AMarie Curve
BSir J.J Thomson
CHenn Becquerel
DNiels Bohr
EEnrico Fermi
View Explanation & Discuss
Question 1836
waec 1993
lf Einstein’s photoelectric equation is represented by hf - W = Φ where h is Planck’s constant, f the frequency of incident radiation and W the work function of the material, what does the symbol Φ up stand for?
AEnergy of the photons
BMaximum Kinetic energy of the ejected electrons
CThreshold frequency of the photons
DStopping potential of the electrons
EVelocity of the electrons
View Explanation & Discuss
Question 1837
waec 1993
24 Na → 24 mg4 + X + energy
11         2                             

The equation above represents a nuclear decay of sodium isotope. What is X?
AAlpha particle
BBeta particle
CGamma ray
DX-ray
ENeutron
View Explanation & Discuss
Question 1838
waec 1993
How long does it take a 750 W heater operating at full rating to raise the temperature of 1 kg of water from 40oC to 70oC? (Take the specific heat capacity of water as 4200 J kg-1 K-1 and neglect heat losses).
A84s
B112s
C168s
D280s
E616s
View Explanation & Discuss
Question 1839
waec 1993

What amount of current would pass through a 10 Ω coil if it takes 21s for the coil to just melt a lump of ice of mass 10g at 0oC if there are no heat losses? (Latent heat of fusion of ice = 336 Jg\(^{-1}\)).

A16.00A
B4.00 A
C0.50A
D0.25A
E0.06 A
View Explanation & Discuss
Question 1840
waec 1993
Electric motor primarily converts
Aelectrical energy into chemical energy
Belectrical energy into heat energy
Ckinetic energy into potential energy
Delectrical energy into mechanical energy
Emechanical energy into light energy
View Explanation & Discuss
Question Navigator
Current
MathsFaculty