Measurements an...

At which of the following positions does a mass and spring harmonic oscillator possess maximum kinetic energy?

The tip of a screw gauge has 71 divisions. The screw covers 5 mm when it takes 7 rotations. Find the least count of screw gauge and pitch of the screw gauge respectively.

Which of the following instruments has/have least count smaller than 0.1 cm?

The upper jaws of the vernier calipers are used to measure

The main scale of a vernier has 20 divisions to a centimeter.19 of these divisions are divided into 20 parts.The vernier has a negtaive zero error of 0.005 cm.In taking a reading,the vernier has crossed the 2 cm mark and a further 7 divisions of the main scale.The 13th division of the vernier coincides with a main scale division.What will be the least count of the instrument?

When the jaws meet and the zero of the vernier lies to the left of the zero of the main scale. Which of the following options is true according to the situation?

Which of the following instruments cannot be used to measure length up to second place of a centimeter?

Tom measures the length of a wire using a pair of vernier callipers. The main scale reading comes out to be 3.6 cm and the seventh division of vernier exactly coincides with the main scale division. Find the length of the wire. (Given: Least count of vernier callipers = 0.01 cm; zero error of vernier callipers = +0.03 cm)

While measuring the diameter of a sphere with a vernier calliper, if M.S.R and V.C.D are 35 mm and 5 repectively and if the vernier scale consists of 20 divisions, then what is the diameter of the sphere? 

Least count of vernier calliper can be changed by