Nkojọpọ....
|
Tẹ mọ́ & Dì mú láti fà yíká. |
|||
|
Tẹ ibi lati pa |
|||
Ibeere 3 Ìròyìn
Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V.
Awọn alaye Idahun
Ibeere 4 Ìròyìn
A stone is thrown with a speed of 10ms at an angle of 30° to the horizontal, Calculate its time of flight, (g = 10ms2)
Awọn alaye Idahun
Ibeere 5 Ìròyìn
An effort P applied at one end of a crowbar just overcomes the resistance W at the lid of a tin. The mechanical advantage of the crowbar is expressed as
Awọn alaye Idahun
Ibeere 8 Ìròyìn
Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is
Awọn alaye Idahun
Ibeere 9 Ìròyìn
Two forces of magnitude 8N and 4N act at right angle to each other. The angle between the resultant and the 8N force is
Awọn alaye Idahun
Ibeere 10 Ìròyìn
The phenomenon of photoelectric effect is used in the following EXCEPT
Awọn alaye Idahun
Ibeere 12 Ìròyìn
Two images Y and X are formed by a plane mirror and a convex mirror respectively. Which of the following is correct about their characteristics?
Awọn alaye Idahun
Ibeere 15 Ìròyìn
Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then
Awọn alaye Idahun
Ibeere 16 Ìròyìn
The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth?
Awọn alaye Idahun
Ibeere 17 Ìròyìn
Which of the following pairs of phenomena helps in the resolution of the wave-particle paradox of matter?
Awọn alaye Idahun
Ibeere 19 Ìròyìn
The defect of the eye lens which occurs as a result of weak ciliary muscles is called
Awọn alaye Idahun
Ibeere 20 Ìròyìn
Which of the following pairs of musical instruments produce sound due to the vibration of air column?
Awọn alaye Idahun
Ibeere 21 Ìròyìn
An object of mass 2kg moves for 5s with a uniform velocity of 10ms. What is the magnitude of its acceleration in ms-2
?
Awọn alaye Idahun
Ibeere 22 Ìròyìn
Which of the following statements is correct about light and sound waves? Both
Awọn alaye Idahun
Ibeere 23 Ìròyìn
A ball of mass 0.1kg moving with velocity of 20ms-1 is hit by a force which acts on it for 0.02s. If the ball moves off in the opposite direction with a velocity of 25ms-1 , calculate the magnitude of the force.
Awọn alaye Idahun
Ibeere 24 Ìròyìn
Arrange the following in the order of their increasing frequency.
I. Visible light
II. Gamma rays
III. Radio waves
IV. Infra-red radiation
V. Ultra-violet radiation
Ibeere 26 Ìròyìn
The electric potential at a distance d from a point charge q in air of permittivity eo is expressed as?
Awọn alaye Idahun
Ibeere 27 Ìròyìn
A projectile attains its maximum height when the angle of projection is
Ibeere 28 Ìròyìn
An observer heard the sound of thunder 5.8s after the lightning flash was seen. How far was he from the source? [Speed of sound in air = 330ms-1]
Awọn alaye Idahun
Ibeere 29 Ìròyìn
The work done in extending a spring by 40 mm is 1.52J. Calculate the elastic constant of the spring.
Awọn alaye Idahun
Ibeere 30 Ìròyìn
Which of the following cells does not require a dipolar for effective and efficient delivery of current?
Awọn alaye Idahun
Ibeere 31 Ìròyìn
A plane progressive wave is represented by the equation y = 0.2sin (200πt - 0.5.x) where x and y are measured in cm and t in s. What is the frequency of the wave?
Awọn alaye Idahun
Ibeere 32 Ìròyìn
Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane?
Ibeere 33 Ìròyìn
A sound wave from a ship is received 8.4s later. What is the depth of the sea? [Speed of sound in water 1500ms-1]
Awọn alaye Idahun
Ibeere 35 Ìròyìn
A body executing simple harmonic motion has an angular speed of 2π radians. Its period of oscillation is (π 3.14).
Awọn alaye Idahun
Ibeere 38 Ìròyìn
The space between the two walls of a vacuum flask is completely evacuated to reduce heat loss by
Awọn alaye Idahun
Ibeere 39 Ìròyìn
Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg-1 . Specific heat capacity of water 4.2Jg-1 K-1]
Awọn alaye Idahun
Ibeere 40 Ìròyìn
A transformer has an efficiency of 92.5%. the ratio number of turns in the primary coil to that in the secondary coil is 128 : 45. If the current passing through the secondary coil is 9.0A, calculate the current passing through the primary-coil.
Awọn alaye Idahun
Ibeere 41 Ìròyìn
Determine the value of x from the nuclear reaction below,
\(^{222}_{86}Rn\) → \(^{x}_{88}Ra\) + 2β + energy
Awọn alaye Idahun
Ibeere 43 Ìròyìn
Which of the following statements about the pressure in a liquid is NOT correct? It
Ibeere 44 Ìròyìn
An immersion heater is rated 1500W. How long does it take the heater to raise the temperature of 1 kg of water by 30°C? (Assume heat lost to the surrounding is negligible, Specific heat capacity of water 4200Jkg-1K-1)
Awọn alaye Idahun
Ibeere 45 Ìròyìn
A ball of mass 100g falls from a height of 5m onto a concrete floor and rebounds to a height of 3m. Calculate the energy lost. (g = 10ms-2)
Awọn alaye Idahun
Ṣe o fẹ tẹsiwaju pẹlu iṣe yii?