Update ICSE - X Physics Board Paper 2024.txt
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ICSE - X Physics Board Paper 2024.txt
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@@ -67,12 +67,12 @@ Q = mL = 500 × 330 = 165,000 J
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SECTION B (40 MARKS)
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| 68 |
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Question 4 (10 marks)
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| 70 |
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(i) Solution:
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1/v - 1/u = 1/f
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1/72 + 1/36 = 1/f
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| 73 |
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3/72 = 1/f
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| 74 |
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f = 24 cm
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| 75 |
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Power = 100/24 = 4.17 D
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| 76 |
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(ii)(a) Microwave
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| 78 |
(ii)(b) X-rays
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| 67 |
SECTION B (40 MARKS)
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| 68 |
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| 69 |
Question 4 (10 marks)
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| 70 |
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(i) (3 marks) Solution:
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| 71 |
1/v - 1/u = 1/f
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| 72 |
1/72 + 1/36 = 1/f
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| 73 |
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3/72 = 1/f (1 mark for working)
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| 74 |
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f = 24 cm (1 mark)
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| 75 |
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Power = 100/24 = 4.17 D (1 mark)
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| 76 |
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| 77 |
(ii)(a) Microwave
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| 78 |
(ii)(b) X-rays
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