The clinical thermometer differs from other mercury-in-glass thermometers because it has
I. a constriction
II. a wide range
III. a short range
IV. a narrow bore.
Which of the above are correct?
A man at the back of a crowd watches a parade by holding a plane mirror just above his head. The parade passes 6 metres behinde his head and the mirror is 0.25m in front of the man. How far does the image in the mirror appear to be from the man?
