9. If a pencil is held above a table and directly below a tube light, a sharp shadow isobtained when it is:(a) held parallel to the tube light and farabove the table(b) held vertically(c) held parallel to the tube light and closeto the table(d) held near the tube light

9. If a pencil is held above a table and directly below a tube light

1.	9. If a pencil is held above a table and directly below a tube light, a sharp shadow isobtained when it is:(a) held parallel to the tube light and farabove the table(b) held vertically(c) held parallel to the tube light and closeto the table(d) held near the tube light
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