Wave in which the medium move perpendicularly as the direction of the wave is longitudinal wave.

ms = 1000s

During the charging by friction the electrons are created

Which is not a characteristic of real images?

Why do you see the t-shirt white?

Gas forms 78% in the atmosphere

Cell is a collection of batteries

When we remove bulb from parallel circuit the total resistance decreases.

“Causes displacement of people from large areas of land” is disadvantage of Biomass

It is used in binoculars

High frequency means loud sound

When the wave travels from medium to another the frequency changes and wavelength remains the same

Rub a piece of material into permanent magnet is a way to turn the material to temporary magnet

Mantle located beneath the core

Jupiter is the largest planets and mercury is the smallest

How much the sun is heavier than the earth ?

Temperature at the surface of the sun equals 16 million degrees

Earth axis point toward the sun in winter

1 light years in kilometers equals

Another name for solar cells

If the solid gets hotter, the particles move around