Which one of the following statements is not correct?

Which one of the following statements is not correct?

The Kelvin scale of temperature is called the Absolute scale

Visible light radiation has wavelength range of 400—700 nm

The capacity to do work is called power

The wavelength of Gamma rays is less than that of X-rays

Answer is Right!

Answer is Wrong!

This question was previously asked in

UPSC NDA-2 – 2015

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The correct answer is C) The capacity to do work is called power.

The capacity to do work is defined as energy. Power is defined as the rate at which work is done or energy is transferred (Power = Work/Time or Energy/Time). Therefore, statement C is incorrect.

A) The Kelvin scale is indeed called the absolute scale because its zero point (0 K) is absolute zero, the theoretical point at which particles have minimal motion. B) The visible light spectrum generally ranges from approximately 400 nm (violet) to 700 nm (red). D) Gamma rays are electromagnetic waves with the shortest wavelengths and highest frequencies, making their wavelengths less than those of X-rays.

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