Which type of electromagnetic wave has the highest frequency and energy in the spectrum?

What is the main function of the ratchet in a micrometer screw gauge?

When a decimal point is moved to the left in scientific notation, the exponent of 10 is:

A time interval of 2000 microseconds is equal to:

Which physical quantity has candela as its SI base unit?

Which derived unit is equivalent to metre per second?

What is the unit of measurement for radioactive activity equal to one nuclear disintegration per second?

When an object reverses direction, its distance is generally:

How many significant figures are in 0.00450?

If the zero of the Vernier scale is to the right of the zero of the main scale, the instrument shows:

When a decimal point is moved to the right to write a small number in scientific notation, the exponent is: