Question 36
Question 36 of 40

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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct

Topics Tested

State the differences between the properties of temporary magnets (made of soft iron) and the properties of permanent magnets (made of steel)

Describe how wavelength and gap size affects diffraction through a gap

Know that the p.d. across an electrical conductor increases as its resistance increases for a constant current