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- Diffraction- is the spreading waves beyond obstacle openings
- Refraction- is the bending of waves when they change the medium
sharon kalunda answered the question on April 5, 2019 at 07:02
- If a wave is propagated at a velocity of 50m/s; determine its frequency if the distance
travelled by the wavelength in 2 cycles is 1.25m(Solved)
If a wave is propagated at a velocity of 50m/s; determine its frequency if the distance
travelled by the wavelength in 2 cycles is 1.25m
Date posted: April 5, 2019. Answers (1)
- The figure below shows two loudspeakers L1 and L2 connected to a signal generator.(Solved)
The figure below shows two loudspeakers L1 and L2 connected to a signal generator.
An observer walks along the line 0-01 (equidistant from L1 and L2) and another along the
Line AA1.Explain the observation made by each and give reasons to your answer
Date posted: April 5, 2019. Answers (1)
- State any two conditions necessary for the establishment of a stationary wave(Solved)
State any two conditions necessary for the establishment of a stationary wave
Date posted: April 5, 2019. Answers (1)
- Figure below shows the displacement of a particle in a progressive wire incident on a boundary
between deep and shallow region.(Solved)
Figure below shows the displacement of a particle in a progressive wire incident on a boundary
between deep and shallow region.
Complete the diagram to show what is observed after bounding. (Assume no loss of energy)
Date posted: April 5, 2019. Answers (1)
- The figure below shows a wave profile with velocity 340m/s(Solved)
The figure below shows a wave profile with velocity 340m/s
a)Determine:
(i) The frequency of the wave
(ii) The period of the wave
(b) On the same diagram above sketch a wave profile of another wave with same
frequency, greater amplitude but 180o out of phase with the one in (a)
Date posted: April 5, 2019. Answers (1)
- The diagram below represents plane wave fronts produced in a ripple tank.(Solved)
The diagram below represents plane wave fronts produced in a ripple tank.
Given that the distance AB is 15 cm, determine the wavelength of the wave
Date posted: April 5, 2019. Answers (1)
- The figure below shows waves starting from two coherent sources S1 and S2.(Solved)
The figure below shows waves starting from two coherent sources S1 and S2.
What would be observed at P if the waves are
(i) light waves. (ii) Sound waves.
Date posted: April 5, 2019. Answers (1)
- The figure below shows circular waves approaching a straight reflector. Complete the sketch
to show what happens when the waves hit the reflector.(Solved)
The figure below shows circular waves approaching a straight reflector. Complete the sketch
to show what happens when the waves hit the reflector.
Date posted: April 5, 2019. Answers (1)
- The figure below shows a piston inside a glass tube(Solved)
The figure below shows a piston inside a glass tube
i)Air inside is made to vibrate producing a fundamental note. Find the fundamental frequency
to be produced
ii)If the glass tube is made open by removing the piston and opening the other end, what is
the new fundamental frequency?
Date posted: April 5, 2019. Answers (1)
- Calculate the pressure of the gas supply (Atmospheric pressure = 1.0x105Pa)(Solved)
Calculate the pressure of the gas supply (Atmospheric pressure = 1.0x105Pa)
Date posted: April 5, 2019. Answers (1)
- State a reason why a closed tube or pipe produces less quality sound than an open one.(Solved)
State a reason why a closed tube or pipe produces less quality sound than an open one.
Date posted: April 5, 2019. Answers (1)
- 500g of a metal is heated to 100oC and then placed in a 200g mass of water at 15oC. If the final temperature rises to...(Solved)
500g of a metal is heated to 100oC and then placed in a 200g mass of water at 15oC. If the final temperature rises to 21oC, calculate the specific heat capacity of the metal.
(Specific heat capacity of water = 4200J/kg
Date posted: April 5, 2019. Answers (1)
- Use a ray diagram to show how short sightedness in a human eye can be corrected.(Solved)
Use a ray diagram to show how short sightedness in a human eye can be corrected.
Date posted: April 5, 2019. Answers (1)
- Figure 2 shows an object O placed in front of a concave ion with principal foci F and F1.
Construct a ray diagram to locate the...(Solved)
Figure 2 shows an object O placed in front of a concave ion with principal foci F and F1.
Construct a ray diagram to locate the position of the image
Date posted: April 5, 2019. Answers (1)
- Water of mass 200g at temperature of 60°Cis put in a well lagged copper calorimeter of mass
80g. A piece of ice at 0° C and...(Solved)
Water of mass 200g at temperature of 60°Cis put in a well lagged copper calorimeter of mass
80g. A piece of ice at 0° C and mass 20g is placed in the calorimeter and the mixture stirred
gently until all the ice melts. The final temperature, T, of the mixture is then measured.
Determine:
i) The heat absorbed by the melting ice at O°C
ii) The heat absorbed by the melted ice (water) to rise to temperature T (answer may be
given in terms of T)
iii) The heat lost by the warm water and the calorimeter (answer may be given in terms of T)
iv) The final temperature of the mixture
Date posted: April 5, 2019. Answers (1)
- A thin converging lens of focal length 30cm is used to form a real image on a screen 90cm
from the lens, Determine :-(Solved)
A thin converging lens of focal length 30cm is used to form a real image on a screen 90cm
from the lens, Determine :-
(i) The object distance
(ii) The magnification
Date posted: April 5, 2019. Answers (1)
- The figure below shows an object, O, placed in front of an objective lens Lo whose focal
length, ƒo is less than the focal length of...(Solved)
The figure below shows an object, O, placed in front of an objective lens Lo whose focal
length, ƒo is less than the focal length of the eye piece lens; Le Complete using ray
construction how the arrangement would produce a compound. Microscope
Date posted: April 5, 2019. Answers (1)
- The barometric height at sea level is 76cm of mercury while at a point on a highland it is 74cm
of mercury. What is the altitude...(Solved)
The barometric height at sea level is 76cm of mercury while at a point on a highland it is 74cm
of mercury. What is the altitude of the point? (Take g = 10m/s2 , density of mercury =
13600kg/m3 and density of air as 1.25kg/m3)
Date posted: April 5, 2019. Answers (1)
- An object of height 10cm is placed in front of a diverging lens of focal length 25 cm and at a
distance of 20 cm from...(Solved)
An object of height 10cm is placed in front of a diverging lens of focal length 25 cm and at a
distance of 20 cm from the lens. Calculate the height of the image formed
Date posted: April 5, 2019. Answers (1)
- Define linear magnification of a lens.(Solved)
Define linear magnification of a lens.
Date posted: April 5, 2019. Answers (1)