Subject :NSO Class : Class 8
A metre ruler is held vertically in front of a plane mirror of length 15 cm as shown in the given figure. Arun peeps through a hole at the 40 cm mark. The range of the scale of the metre ruler that can be seen is
A10 cm to 40 cm
B15 cm to 45 cm
C20 cm to 50 cm
DNone of these.
Ans 1:
Class : Class 9