Screening Test Quiz#3

Alpha (α) particles are helium (He) nucleus with a charge of

When two light nuclei combine to form a heavier nucleus, the process is said to be

The elements which emit natural radioactivity are known

In SI base units, 1 Bq is equal to

A helium nucleus comprising of two protons and two neutrons with a charge of 2e is

Radiations present in atmosphere due to different radioactive substances are called

Gamma (γ) radiation are fast moving

In air, alpha particles have range of

Isotopes have same number of protons but different number of

 The number of protons inside nucleus represents

The formula we use to find stress is

The mass of 150 cm³ of stone is 400 g. Its density is

Plasma consists of

 A machine which works on Pascal’s law is known as

The matter is made up of

 The distance between the molecules of the liquid are

Increasing atmospheric pressure with a decline, later on, predicts an

At sea level, the vertical height of the water column would be

As the depth of the sensor varies the liquid pressure

The force acting normally per unit area on the surface of the body is known as

 The refractive index of water is

 If light enters any substance with refractive index, it is

Thin flexible glass rods to transfer data from one region to another are known as

When light bends, it

 The concave lens is also known as

The lenses used for short sighted are

 Light travels more quickly in

Each pair of objects is identified by

More dense the object

 The light in ‘optical fiber’ is