TG EAMCET (EAPCET) Physics Multiple Choice Questions (MCQs)

131. What is the unit of nuclear binding energy?

• a) Joule
• b) Electron volt (eV)
• c) Kilowatt
• d) Ampere

Answer: b) Electron volt (eV)

132. The discovery of the neutron was made by:

• a) Albert Einstein
• b) James Chadwick
• c) Ernest Rutherford
• d) Niels Bohr

Answer: b) James Chadwick

133. The size of a nucleus is typically of the order of:

• a) \(10^{-15} \, \text{m}\)
• b) \(10^{-10} \, \text{m}\)
• c) \(10^{-12} \, \text{m}\)
• d) \(10^{5} \, \text{m}\)

Answer: a) \(10^{-15} \, \text{m}\)

134. The mass-energy equivalence principle is given by which of the following equations?

• a) \( E = mc^2 \)
• b) \( E = mc^3 \)
• c) \( E = mc^4 \)
• d) \( E = mv^2 \)

Answer: a) \( E = mc^2 \)

135. Radioactive decay follows:

• a) Linear growth
• b) Exponential decay
• c) Sinusoidal decay
• d) Constant decay

Answer: b) Exponential decay

136. The half-life of a radioactive material is defined as:

• a) The time taken for half of the material to decay
• b) The time taken for the material to become completely stable
• c) The time taken for the material to double
• d) The time taken for the material to become radioactive

Answer: a) The time taken for half of the material to decay

137. In alpha decay, the emitted particle is:

• a) An electron
• b) A proton
• c) A neutron
• d) A helium nucleus

Answer: d) A helium nucleus

138. In beta decay, which particle is emitted?

• a) Proton
• b) Electron
• c) Neutron
• d) Positron

Answer: b) Electron

139. Which of the following is a source of nuclear fission energy?

• a) Uranium-235
• b) Hydrogen
• c) Helium-4
• d) Carbon-12

Answer: a) Uranium-235

140. Nuclear fusion reactions are the primary source of energy in:

• a) Nuclear reactors
• b) Stars
• c) Atomic bombs
• d) Hydrogen bombs

Answer: b) Stars