When was ‘Vayudoot’ airline setup in

What type of rays are used in a CT scan to visualize the internal structures of the human body?

When white light passes through a glass prism, which color deviates the least?

The time period of a second’s pendulum is –

A transformer works on which principle?

Which of the following is a characteristic of sound waves?

What is the escape velocity from Earth?  

Which of the following vitamins are called fat-soluble vitamins?

Pycnometer is an instrument used to measure the –

For a non-relativistic particle, the ratio of phase velocity to group velocity of de Broglie waves is: