Which reasoning technique derives conclusions from

What is the minimum distance required for an obstacle to produce a distinct echo?

The important unit of a microprocessor is –

Which statement about Cathode Rays is incorrect ?

Which of the following physical quantities is scalar quantity ?   

Which type of mirror is utilized in solar furnaces to focus sunlight and generate heat?

Who discovered the electron?

Water gets cooled, when ice is immersed in it. It is because of the phenomenon of

Velocity of the sound is minimum in-

Water Turbine was invented by ________ .

The energy possessed by a body due to its position or shape is known as: