A ship will submerge when it displaces water equal to its

What is the speed of light in air?

Water gets cooled, when ice is immersed in it, this phenomenon is known as

Water is a good solvent of ionic salts because -

Which of the following is the least penetrating power rays ?

Among the following materials, which is not an insulator?

Which color of light experiences the most bending when it passes through a prism and separates from white light?

For concave mirrors, when the object is located between the ______, the resulting image is virtual and erect.

What is the SI unit for measuring electric current?