The intensity of light falling on the film in a camera depend on the i. brightness of the object. ii. diameter of the aperture stop. iii. speed of the shutter. Which of the statements is/are correct/
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2015
On which of the following factor does the viscosity of a liquid depend? i. Nature of the liquid. ii. Temperature of the liquid. iii. Area of the liquid surface
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2015
Which of the following physical quantities is correctly paired with it's corresponding S.I unit?
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2015
An object is placed 10cm from a converging lens of foal length 15cm. Calculate the magnification of the image formed
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2015
Which of the following statements about mass and weight are correct? i. Weight is the force of gravity on a body. ii. The mass of a body is the quantity of matter in the body. iii. The weight of a body is greatest at th…
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2015
The resultant force in a couple is
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2015
An object floats in a fluid when it displaces it's
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2015
The barometric reading at a place is 73.5m Hg. Calculate the pressure at a point 30m below the surface of water contained in a reservoir at the place. [g = ms-2, density = 1.2 x 104kg m-3, density of water = 1.0 x 103m-3…
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2015
Materials that can be stretched and still return to their original forms when the stresses are removed are said be
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2015
Two strings each inclined at an angle 30o to the horizontal are used to hold a bucket of water weighing 20N. Calculate the tension i n each string.
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2015
In a school compound a girl walks 40km due east from the laboratory to the staff room to submit her report. Then she returns and walks 30m due north to her classroom. Determine the magnitude of her displacement from the…
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2015
Which of the following statements describes a body in a stable equilibrium correctly?
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2015
A body is projected with an initial velocity U at an angle O to the horizontal. The time taken by it to reach its maximum height is given by the expression
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2015
The slope of a straight-line velocity-time graph represents
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2015
Water is unsuitable for use as a thermometric liquid because it
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2015
The crackling noise produced by aluminum roofing sheets on a house during a hot sunny day is a result of
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2015
A body of mass 1000kg is released from a height of 10m above the ground. Determine its kinetic energy just before it strikes the ground .[g = 10ms-2]
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2015
A uniform bar AB is balanced on a knife-edge which is 60cm from B by a mass of 22g which hangs at C 10cm from A. Calculate the mass of the bar.
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2015
A bullet fired vertically upwards reaches a height of 500m. Neglecting air resistance, calculate the magnitude of the initial velocity of the bullet. [g = 10ms-2]
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2015
In an experiment in which a molten substance is allowed to cool, the cooling curve above was obtained. The temperature 60oC is known as the