Answers by anony mous

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Define magnification

answered Aug 23, 2021 in Physics Form 1

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A glass block of thickness 12 cm is placed on a mark placed on a plain paper. The mark is viewed normally through the glass. Calculate the apparent depth of the mark and hence the vertical displacement. (refractive index of glass is 1.5)

answered Aug 23, 2021 in Physics Form 1

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Given that the refractive index of diamond is 2.42 and the velocity of light in air 3.0 X 108 m/s,calculate the velocity of light in diamond.

answered Aug 23, 2021 in Physics Form 3

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Define the term total internal reflection as used in refraction

answered Aug 23, 2021 in Physics Form 3

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Two plane mirrors M1 and M2 and inclined to each other and a ray of light shone on M1 as shown:Show on the diagram the path followed by the ray until it is reflected by M2

answered Aug 23, 2021 in Physics Form 1

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The figure below shows an object placed in front of a concave mirror. On the same diagram, locate the position of the image

answered Aug 23, 2021 in Physics Form 2

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A person stands between two high walls d metres apart. He stands 400m from the nearer wall. He blows a whistle and hears two echoes, the first one after 2.5 seconds and the second one 2 seconds later. Determine:

answered Aug 23, 2021 in Physics Form 2

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The figure below shows the displacement-time graph of a wave travelling at 0.4ms−1 displacement time graph of wave travelling at 0.4 How many complete waves are shown? Determine the period time of the wave

answered Aug 23, 2021 in Physics Form 2

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Define an echo.

answered Aug 23, 2021 in Physics Form 2

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State three methods of making magnets.

answered Aug 23, 2021 in Physics Form 2

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In estimating the height of a tree, the following measurements were recorded: Height of the rod = 180cm. Length of the shadow of the rod = 116cm Length of the shadow of the tree = 420cm Calculate the height of the tree.

answered Aug 23, 2021 in Physics Form 1

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In the figure the arrow indicates the direction of the current in the conductor. Sketch on the diagram the magnetic field pattern due to the current.

answered Aug 23, 2021 in Physics Form 2

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Complete the figure below to show the position of the image of object A in the mirror M.

answered Aug 23, 2021 in Physics Form 1

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A parent comes to you seeking your advice whether to use a white shawl or a black one to wrap her child to kept it warm. Which shawl would you advice to use and why?

answered Aug 23, 2021 in Physics Form 1

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The diagram in figure 7 below shows one method of making a magnet. What polarity is at X and Y when the switch is closed.

answered Aug 23, 2021 in Physics Form 2

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Draw the magnetic field pattern around the arrangement shown below

answered Aug 23, 2021 in Physics Form 2

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What is dispersion of light?

answered Aug 23, 2021 in Physics Form 3

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The diagram below shows a current carrying conductor placed in a magnetic field. Sketch the resulting magnetic field pattern.

answered Aug 23, 2021 in Physics Form 2

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State two defects of a simple cell.

answered Aug 23, 2021 in Physics Form 1

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A hockey player trains on a nylon fiber surface. As he runs around, his shoes rub against the surface and he becomes positively charged.

answered Aug 23, 2021 in Physics Form 1

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