Two liquids X and Y having the same mass are supplied with the same quantity of heat. If the temperature rise in X is twice that of Y, the ratio of specific heat capacity of X to that of Y is
A2:1
B1:2
C4:1
D1:4
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Question 752
jamb2013
A gas at a pressure of 105Nm-2expands from 0.6m-3 to 1.2m3 at constant temperature, the work done is
A7.0 x 106J
B6.0 x 10 6J
C6.0 x 10 5J
D6.0 x 10 4J
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Question 753
jamb2013
A wire of length 100.0m at 30o has linear expansive of 2x10-5K-1 Calculate the length of the wire at a temperature of - 10oC
A100.08m
B100.04m
C99.96m
D99.92m
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Question 754
jamb2013
Calculate the length which corresponds to a temperature of 20oC if the ice and steam points of an unguarded thermometer are 400 mm apart
A20mm
B30mm
C60mm
D80mm
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Question 755
jamb2013
What volume of alcohol will have same mass as 4.2m-3 of petrol?
Density of alcohol = 8.4 x 10^2 kgm-3, density of petrol =7.2x10^2 kgm-3
A0.8m3
B1.4m3
C3.6m3
D49.m3
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Question 756
jamb2013
Calculate the work done when a force of 20N stretches a spring by 50mm.
A0.5J
B1.5J
C2.0J
D2.5J
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Question 757
jamb2013
If a pump is capable of lifting 5000kg of water through a vertical height of 60m in 15 min, the power of the pump is
A2.2.5 x 10 5js-1
B2.5 x 104js-1
C3.3 x 103js-1
D3.3 x 102js-1
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Question 758
jamb2013
An object is moving with a velocity of 5m-1. At what height must a similar body be situated to have a potential energy equal in value with kinetic energy of the moving body?
A25.0m
B20.0m
C1.3m
D1.0m
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Question 759
jamb2013
A piece of cork floats in a liquid. What fraction of its volume will be immersed in the liquid?
[Density of the cork = 0.25 x 103kgm-3, Density of the liquid = 1.25 x 103kgm-3]
A0.8
B0.5
C0.2
D0.1
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Question 760
jamb2013
Calculate the apparent weight loss of a man weighing 70kg in an elevator moving downwards with an acceleration of 1.5ms-2.
[g = 10ms-2]
A686N
B595N
C581N
D105N
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Question 761
jamb2013
A train with an initial velocity of 20ms-1 is subjected to a uniform deceleration of 2m-2. The time required to bring the train to a complete halt is?
A5s
B10s
C20s
D40s
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Question 762
jamb2013
A simple pendulum of length 0.4m has a period of 2s. What is the period a similar pendulum of length 0.8m at the same place?
A8s
B4s
C2\(\sqrt{2}s\)
D\(\sqrt{2}s\)
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Question 763
jamb2013
The pair of physical quantities that are scalar only are ?
Avolume and area
Bmoment and momentum
Clength and displacement
DImpulse and time
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Question 764
jamb2013
The resultant of two forces is 50N. If the forces are perpendicular to each other and one of them makes an angle 0f 30o with the resultant, find its magnitude.
A100.0N
B57.7N
C43.3N
D25.0N
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Question 765
jamb2013
When a brick is taken from the earth's surface to the moon, its mass
Aremains constant
Breduces
Cincreases
Dbecomes zero
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Question 766
waec2012
Which of the following radiations emitted in radioactive decay has momentum, a fairly high penetrating power and is deflected by a magnet?
Aalpha particles
Bbeta particle
Cgamma radiation `
DX-radiation
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Question 767
waec2012
Which of the following arrangements of radiations is in the order of decreasing penetrating power?
A\(\alpha\), \(\beta\), \(\gamma\)
B\(\alpha\), \(\gamma\), \(\beta\)
C\(\gamma\), \(\beta\), \(\alpha\)
D\(\beta\), \(\gamma\), \(\alpha\)
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Question 768
waec2012
Which of the following statements about X-rays is correct? X-rays
Aare produced when a metal surface is irradiated with ultraviolet light
Bare produced when a metal target is used to block fast miving electrons
Chave long wavelengths and are therefoer very penetrating
Dare not part of the electromagnetic spectrum
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Question 769
waec2012
A metal with a work function of 3.0ev is irradiated with ultraviolet light of energy 4.0 ev. The kinetic energy of the ejected electron is
