Which of the following instrument is used to measure

The energy of a photon is proportional to:

Who discovered the cell for the first time?

Which planet is known as the Red Planet?

Which of the following is the first organic compound that was synthesised in the laboratory?

The centre of gravity of a sprinter during the race lies –

Intensity of gravitational field of earth is maximum at –

What is the focal length of a double convex lens for which the radius of curvature of each surface is 30 cm and the refractive index of glass is 2.50 ?

For a system of particles, the center of mass moves:

What is the most basic criteria used to decide whether something is alive?

Which of the following pair of microorganisms is correct?

I. Spirogyra – Algae

II. Amoeba – Fungi