10th Class Physics Chapter 11 TestATOMIC AND NUCLEAR PHYSICS

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Half life of Uranium is:

   1. 4.5 billion years

   2. 4.6 billion years

   3. 4.7 billion years

   4. 4.8 billion years

2. Theoretically, a single gram of matter can be converted into enough energy to power a ...... for days.

   1. Small lamp

   2. Complete city

   3. Single house

   4. Calculator

3. Which type of radiation is positively charged and consists of two protons and two neutrons?

   1. Alpha

   2. Beta

   3. Gamma

   4. Neutron emission

4. Carbon dating is a scientific method used to determine the age of ancient organic materials up to how many years old?

   1. 5,730 years

   2. 50,000 years

   3. 4.5 billion years

   4. 10,000 years

5. Ionization occurs when radiation removes ...... from atoms, turning them into ions.

   1. Protons

   2. Electrons

   3. Neutrons

   4. Photons

6. In 1911, Rutherford conducted his scattering experiment using a thin sheet of ...... foil.

   1. Aluminum

   2. Copper

   3. Gold

   4. Iron

7. What did Rutherford's alpha particle scattering experiment reveal about the structure of the atom?

   1. Electrons are distributed evenly throughout the atom

   2. Protons and electrons are located in the nucleus

   3. Atoms are indivisible and indestructible

   4. The nucleus is small, dense, and positively charged

8. Alpha particles are positively charged and have a small mass similar to the atoms of which element?

   1. Hydrogen

   2. Helium

   3. Gold

   4. Carbon

9. Which of the following is a practical application of nuclear radiations?

   1. Cooking food in microwave ovens

   2. Medical imaging and cancer treatments

   3. Solar energy generation

   4. Airplane navigation system

10. The process in which a heavy nucleus splits into two smaller nuclei when bombarded by a neutron is called ......:

    1. Fusion reaction

    2. Fission reaction

    3. Alpha decay

    4. Chemical bonding