Nkojọpọ....
|
Tẹ mọ́ & Dì mú láti fà yíká. |
|||
|
Tẹ ibi lati pa |
|||
Ibeere 2 Ìròyìn
The escape velocity of an object from the gravitational field of a planet
I. Increases with the mass of the object
II. Increases with the mass of the planet
III. Is smaller on the moon than on the earth. Which of the above statements is/are correct?
Awọn alaye Idahun
Ibeere 8 Ìròyìn
An object of mass 5.0 cg moving with a velocity of 12ms-1 due north hits a stationary body of mass 7.0kg. If they stick together after collision and move with velocity V due north, calculate the magnitude of V.
Ibeere 9 Ìròyìn
Two metals A and B lose the same quantity of heat when their temperatures drop from 20°C to 15°C. If the specific heat Capacity of A Ii thrice that of B, calculate the ratio of the mass of A to that of B.
Awọn alaye Idahun
Ibeere 10 Ìròyìn
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?
Ibeere 11 Ìròyìn
When some ice cubes are added to a glass of warm water, the glass is cooled by a process of
Awọn alaye Idahun
Ibeere 12 Ìròyìn
A box is pulled a distance s along a smooth horizontal floor by a force of magnitude F, inclined at an angle θ to the horizontal. The work done is
Awọn alaye Idahun
Ibeere 13 Ìròyìn
A constant force acts on a body of mass 50kg and changes its speed from 20ms-1 to 90ms-1 in 10 seconds. Calculate the magnitude of the force applied.
Awọn alaye Idahun
Ibeere 14 Ìròyìn
In which of the following is the expansion of solids a disadvantage?
Awọn alaye Idahun
Ibeere 21 Ìròyìn
A 12V battery supplies a current of 0.4A to a lamp. Calculate the resistance of the lamp.
Awọn alaye Idahun
Ibeere 22 Ìròyìn
Which of the following is used for shielding radioactive fallout?
Awọn alaye Idahun
Ibeere 23 Ìròyìn
Which of the following pairs is an example of translucent bodies?
Awọn alaye Idahun
Ibeere 24 Ìròyìn
Calculate the magnitude of the force due to a magnetic field of 0.40T on an electron moving perpendicular to the field with a speed of 4.00 × 106ms-1 (e 1.60 × 10-19C]
Awọn alaye Idahun
Ibeere 25 Ìròyìn
Which of the following statements is/are correct in any machine?
I. The velocity ratio is usually greater than the mechanical advantage.
II. Efficiency work inputwork outputIII. The velocity ratio is independent of friction.
Awọn alaye Idahun
Ibeere 26 Ìròyìn
A projectile is projected with an initial velocity u, at an angle θ to the horizontal. The maximum height attained is.
Awọn alaye Idahun
Ibeere 28 Ìròyìn
Which of the following is/are longitudinal wave(s)?
I. Light waves from the sun
II. Sound waves in the air
III. Waves on a vibrating string
Awọn alaye Idahun
Ibeere 31 Ìròyìn
A radio station broadcasts at a frequency of 400KHz. If the speed of the wave is 3.0 ×10-8 ms-1, calculate the wavelength of the radio wave.
Ibeere 32 Ìròyìn
The wave theory of light does not explain photoelectricity because
Ibeere 34 Ìròyìn
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.
Ibeere 37 Ìròyìn
The motion of the wheel of a bicycle moving on a smooth straight road is
Awọn alaye Idahun
Ibeere 38 Ìròyìn
Which of the following statements is/are correct? Sound waves travel through
I. air
II. vacuum
III.Water
Awọn alaye Idahun
Ibeere 39 Ìròyìn
The length of a simple pendulum is increased by a factor of four. By what factor is its period Increased?
Awọn alaye Idahun
Ibeere 40 Ìròyìn
Radio receivers are tuned using
Ibeere 41 Ìròyìn
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)
Awọn alaye Idahun
Ibeere 42 Ìròyìn
Which of the following will reduce the frequency of oscillation of a simple pendulum?
Awọn alaye Idahun
Ibeere 44 Ìròyìn
A voltage of 240V is connected to the primary coil of a the rating of the primary turns to the secondary turns if the voltage available at the secondary coil is 15V
Awọn alaye Idahun
Ibeere 45 Ìròyìn
The amplitude of oscillation of a simple pendulum bob diminishes slowly because
Awọn alaye Idahun
Ibeere 46 Ìròyìn
Notes of the same frequency sounded on a guitar and trumpet may differ in
I. loudness
II. Pitch
III. quality Which of the statements above is correct?
Awọn alaye Idahun
Ibeere 47 Ìròyìn
The angle between the geographic and the magnetic meridians at a place on the earth’s surface is the
Awọn alaye Idahun
Ṣe o fẹ tẹsiwaju pẹlu iṣe yii?