The unit of energy in MKS System is _____.

1. 1. Ohm
   2. Volt
   3. Erg
   4. Joule

Light Year is related to _____.

1. 1. Distance
   2. Speed
   3. Energy
   4. Intensity

Joule is the unit of _____.

1. 1. Heat
   2. Pressure
   3. Energy
   4. Temperature

Decibel is a unit of _____.

1. 1. Electricity
   2. Light
   3. Sound
   4. Heat

What is the S.I. unit of temperature?

1. 1. Kelvin
   2. Celsius
   3. Fahrenheit
   4. Centigrade

The energy of food is measured in _____.

1. 1. Kelvin
   2. Calories
   3. Bushel
   4. None of these

The telescope if used for viewing _____.

1. 1. living cells
   2. near objects
   3. small objects
   4. distant objects

The apparatus used in submarines to give a clear view of the object on the surface of the ocean or ground is known as _____.

1. 1. Periscope
   2. Stereoscope
   3. Sextant
   4. Telescope

The microscope is used to study _____.

1. 1. distant objects
   2. near objects
   3. small objects
   4. small and near objects

Sailors and other travellers used a device called _____ to find close to the North and South geographic poles.

1. 1. Pole meter
   2. Magnet
   3. Compass
   4. Compass meter