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A broadcasting station produces radio waves of wavelength 800 m. Determine their frequency (speed of air is 3 x 108ms-1

answered Jun 21, 2021 in Physics Form 2

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Draw a diagram to show a p-n junction connected in the reverse bias mode.

answered Jun 21, 2021 in Physics Form 4

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When iron filings are sprinkled onto a bar magnet, it is observed that there are more iron filings at the ends than in the middle. Explain this observation.

answered Jun 21, 2021 in Physics Form 2

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Figure 3 shows an annular ring.

answered Jun 21, 2021 in Physics Form 1

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Figures 2(a) and 2(b) show two circuit diagrams with identical lamps and identical cells

answered Jun 21, 2021 in Physics Form 1

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The critical angle for a ray travelling from glass to air is 42º. Determine the refractive index of the glass

answered Jun 21, 2021 in Physics Form 1

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Explain what happens to the speed of a water wave as it moves from the shallow to the deep end in a ripple tank

answered Jun 21, 2021 in Physics Form 1

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State two measurements that should be taken for one to decide whether a lead acid accumulator is due for charging.

answered Jun 21, 2021 in Physics Form 1

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Figure 1 shows a gold leaf electroscope

answered Jun 21, 2021 in Physics Form 1

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State the observation made on the image in a pin hole camera when the distance between thie object and the pin hole is reduced.

answered Jun 21, 2021 in Physics Form 1

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Its observed that when a liquid is heated its volume increases. Explain this observation using the kinetic theory of matter

answered Jun 21, 2021 in Physics Form 1

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State the meaning of the term matter

answered Jun 21, 2021 in Physics Form 1

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Figure 14 shows a setup that can be used to determine the specific latent heat of vaporisation of water. A beaker containing some water was placed on a weighing balance and an immersion heater rated 500 W immersed in the water.

answered Jun 21, 2021 in Physics Form 3

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Figure 13 shows a pulley system used to raise a mass of 5 kg through a height of 2 m when a force of 60N is applied. (Acceleration due to gravity g is 10ms-2)

answered Jun 21, 2021 in Physics Form 2

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Figure 12 shows a simple machine.

answered Jun 21, 2021 in Physics Form 2

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A fixed mass of gas initially at 20°C is heated at constant pressure until its volume doubles. Determine its final temperature.

answered Jun 21, 2021 in Physics Form 3

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Figure 11 shows a setup that can be used to verify Charles' Law.

answered Jun 21, 2021 in Physics Form 3

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Figure 10 shows a test-tube inverted and floating inside a plastie bottle containing some water. The bottle is then sealed.

answered Jun 21, 2021 in Physics Form 1

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Figure 9 shows a setup used by a student to investigate how a siphon works.

answered Jun 21, 2021 in Physics Form 1

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Figure 8 shows a bucket filled with water and tied to one end of a string which is used to whirl it in a vertical circular path with a uniform speed v.

answered Jun 21, 2021 in Physics Form 1

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