Which of the following is used as shaving mirrors?
Convex mirror
Plane mirror
Concave mirror
None of these
The normal temperature of the human body is
20 °C
27 °C
37 °C
42 °C
Which of the following is denoted by P.?
Principle focus
Pole
Principal axis
Substances that are burnt to give heat are called
Fuels
Metals
Non-metals
Which of the following is the S.I unit of energy?
Joule
Calorie
Kilocalorie
Newton
In a concave mirror, if the object is at infinity then the image formed is at
Infinity
The focus
The centre of curvature
The pole
The clinical thermometer is used to check when you have
Cough
Headache
Fever
Sorethroat
The shiny liquid metal in the thermometer is
Copper
Iron
Silver
Mercury
In a concave mirror, if the object is at the focus, the image is
At infinity
At the focus
Behind the mirror
At the centre of curvature
Temperature is measured using a
Scale
Thermometer
Manometer
Barometer
