“As we increase the production of one good, the

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

Lambert's law is related to–

S.I unit of Inductance is

Which device uses ultrasonic waves for getting images of internal organs of human body?

Red light is used for signals because it has –

Which of the following dyes is used for colouring Paper and typewriters?

A ship will submerge when it displaces water equal to its

What conditions must be met for stationary waves to form?

The instrument which uses sound waves to measure the depth of oceans is –

Consider the following statements:

1. A flute of smaller length produces waves of lower