Who was recently appointed as the Director General of

What is the wavelength of visible spectrum?

The Mohs scale is used to measure:

Calculate the work done in moving a charge of 2 C across two points having a potential difference of 12 V.

Which of the following optical phenomena CANNOT convert unpolarised light to plane polarised light?

The Lyman series in hydrogen atom spectrum lies in:

If an agent does a work 'W' in time 't', then the power is given by:__________.

Why does a lemon appear larger when viewed from the side of a glass of water?

The velocity of heat radiation in a vacuum is?

Two spherical conductors of radii 2 cm and 8 cm are connected. The ratio of charges on them at equilibrium is:

The current across the 3 ohm resistance in the given circuit is: