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Main scale reading = 0.5, Venial scale = 5 x 0.01 = 0.05 cm
Total = 0.5 + 0.05 = 0.55 cm or 5.5 mm or 0.0055 m
johnmulu answered the question on April 18, 2017 at 09:25
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The micrometer screw gauge represented by Fig.1 has thimble scale of 50 divisions. What is the reading shown?
Date posted: April 18, 2017. Answers (1)
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Figure 2 shows a soft iron bar AB placed in a coil near a freely suspended magnet.
Explain the observation made when the switch is closed.
Date posted: April 18, 2017. Answers (1)
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Date posted: April 18, 2017. Answers (1)
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Date posted: April 18, 2017. Answers (1)
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Date posted: April 18, 2017. Answers (1)
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In an experiment to magnetize two substances p and Q using electric currents, two curves (graphs) were obtained as shown in fig. 1
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Date posted: April 18, 2017. Answers (1)
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b) State the use of manganese (IV) oxide in the cell.
Date posted: April 18, 2017. Answers (1)
- Figure 12, shows an electrical circuit including three switches, S1, S2, S3 and three identical lamps L1, L2, L3. A constant potential difference is applied across X and Y.(Solved)
Figure 12, shows an electrical circuit including three switches, S1, S2, S3 and three identical lamps L1, L2, L3. A constant potential difference is applied across X and Y.
i) Other than L1, state the lamp that will light when S1 and S2 are closed.
ii) How does the brightness in L1 in (i) above compare with its brightness when all the switches are closed?
iii) Explain the observation in (ii) above
Date posted: April 18, 2017. Answers (1)
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Figure 7 shows the features of a dry cell (Leclanche’s). Use the information in the figure to answer the questions a and b
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Date posted: April 18, 2017. Answers (1)
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Figure 10 shows two circuits in which identical dry cells and identical bulbs are used. Use the information in the figure to answer questions a) and b)
a) Explain why the bulb in Figure 10 (b) will be brighter than each of the bulbs in Figure 10 (a).
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Date posted: April 18, 2017. Answers (1)
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Figure 10 shows two circuits in which identical dry cells and identical bulbs are used. Use the information in the figure to answer questions a and b
a) Explain why the bulb in figure 10 (b) will be brighter than each of the bulbs in figure 10 (a).
b) Give the reason why the cells in figure 10 (b) can be used for a longer period than the cells in Figure (10a)
Date posted: April 17, 2017. Answers (1)
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In the circuit diagram shown in figure 12, the lamps are identical and the cells are also identical
State with reason, in which circuit the lamp will be lit for a longer period
Date posted: April 17, 2017. Answers (1)
- Figure 7 shows a highly negatively charged rod being brought slowly near the cap of a positively charged leaf electroscope. If is observed that the leaf initially falls and then rises(Solved)
Figure 7 shows a highly negatively charged rod being brought slowly near the cap of a positively charged leaf electroscope. If is observed that the leaf initially falls and then rises
Explain this observation.
Date posted: April 17, 2017. Answers (1)
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Figure 6 shows a glass bath tube with water fitted with two identical thermometers A and B. It is heated as shown
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Date posted: April 17, 2017. Answers (1)
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Figure 4 shows a source of heat placed at equal distances from two identical flasks X and Y containing air. The surface of X is painted black while Y is clear.
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Date posted: April 17, 2017. Answers (1)
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Figure 3 shows a piece of wood fitted into copper pipe and a piece of a paper wrapped tightly around the junction.
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Date posted: April 17, 2017. Answers (1)
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a) Figure 11 shows how an underground room was ventilated. It had two vents, one at A and the other at B. A fire was lit at point C.
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Date posted: April 17, 2017. Answers (1)
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(Solved)
Figure 4 shows identical beakers P and Q full of water at 90oC. Two similar cold wet clothes are wrapped, one around the top of P and the other around the bottom of Q.
State with a reason the beaker in which the water cools faster.
Date posted: April 17, 2017. Answers (1)
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Date posted: April 17, 2017. Answers (1)
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Use the following information to answer questions a) and b)
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a) Explain why the container Q may become hot faster than P.
b) Explain why the water in test-tube in P becomes hot faster than in Q
Date posted: April 17, 2017. Answers (1)