In a vernier calipers, each cm on the main scale is divided into 20 equal parts. If tenth vernier scale division coincides with nineth main scale division. Then the value of vernier constant will be__________* 10^-2mm.

An aluminium wire is stretched to make its length, 0.4% larger. The percentage change in resistance is

A particle executes S.H.M. with amplitude ‘a’ and time period ‘T’. The displacement of the particle when its speed is half of maximum speed is $\frac{\sqrt[]{x}a}{2}.$ The value of x is

Time period of a simple pendulum is T. The time taken to complete $\frac{5}{8}$ <!-- [if gte mso 9]><xml> </xml><![endif]--> oscillations starting from mean position is $\frac{\alpha }{\beta }T.$ <!-- [if gte mso 9]><xml> </xml><![endif]--> The value of a is

When a particle executes Simple Hormonic Motion, the nature of graph of velocity as a function of displacement will be:

Given below are two statements:

Statement I : A second’s pendulum has a time period of 1 second.

Statement II : It takes precisely one second to move between the two extreme positions.

In the light of the above statements, choose the correct answer from the options given below