In an experiment the angles are required to be measured using an instrument.29 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

In a vernier calipers if the zero division of the vernier scale is to the right of the main scale and the vernier scale  coincides  with the 6^th division of the main scale, what will be zero correction ?

While  measuring the length of a piece of a chalk by Vernier calipers. The main scale reading is found  to be  between 5.2cm and the 5th division of a vernier scale is found to coincide with a division on the  main scale.  Find the length of the chalk if the least count  of the vernier is 0.01cm and zero error is  0.02cm.

A vernier calipers has  25 divisions on the vernier scale.  One centimeter on the main scale is divided into 20 equal parts. Find  the L.C. of the vernier.

The time period of a simple pendulum  is directly proportional to the _________ of the length of the pendulum.

To find the weight of a person ______________ balance is used.

The length of a pendulum is the distance between the point of suspension and  

If an instrument gives nearly equal values in repeated measurements, it possesses

A mechanical device which combines a main scale and vernier scale is called 

Time of one vibration or  1/2 oscillation of a seconds pendulum is