Viral V. Acharya, Professor of Economics at the New York

The surface temperature of the Sun is nearly -

In Young’s double-slit experiment, dark fringes on the screen occur where:

A coin is placed at the bottom of a tank filled with water (n = 4/3) to a depth of 12 cm. How much shall the coin appear raised?

Stars in the sky appear to twinkle due to –

The radiation initially produced in fluorescent tube is –

Light from the Sun reaches us in nearly

Which of the two temperature scales are same ?

Which of the following pairing denoting the mixture of gases in air is NOT correct?

A liquid initially contracts when cooled down to 4°C but on further cooling down to 0°C, it expands. The liquid is 

A satellite moving around Earth in a circular orbit has constant: