Define : Least Count

Define- Heat.

Define : Moderator.

Define : Vibration

Define stem.

Define leaf.

Define seed.

Define Loudness

Define : Analysis

In a experiment the angle are required to be measured using an instrument. 26 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale . If the smallest division of the main scale is half -a-degree (=0.5^(@)) then the least count of the instrument is .

The volume of a solid cylinder of length 10 cm and radius 4 cm is measured using a vernier calliper which has a least count 0.01 cm. Find the percentage error in the measurement.