LRA 211 ACTUAL EXAM PAPER 2026 QUESTIONS AND SOLUTIONS GRADED A PLUS

LRA 211 ACTUAL EXAM PAPER 2026
QUESTIONS AND SOLUTIONS GRADED A
PLUS


◉ The atomic nucleus contains
Answer: protons and neutrons


◉ The component of the nucleus that has a positive charge and mass
is the
Answer: protons


◉ The component of the nucleus that has mass but no electrical
charge is the
Answer: Neutron


◉ If an atom has more electrons than protons, it will
Answer: Negative


◉ When an atom becomes negatively or positively charged it is
usually due to a change in the number of
Answer: Electrons

,◉ A negative ion is
Answer: has more electrons than pr


◉ A positive ion is
Answer: has more protons than electrons


◉ If a particle strikes a nucleus with the same amount of energy as
the atom's nuclear binding energy
Answer: it can split the atom


◉ The electrons stay in orbit around the nucleus because of
Answer: Protons


◉ The electron binding energy is stronger when
Answer: Closer to the nucleas


◉ The electron shell closest to the nucleus is lettered
Answer: K


◉ Electromagnetic radiation
Answer: has no mass

, ◉ What kind of disturbance does electromagnetic radiation NOT
cause?
Answer: mechanical


◉ Which of the following is not part of the electromagnetic
spectrum?
Answer: Radio waves


◉ When considering the wave properties of electromagnetic
radiation, the distance from the peak of one wave to the next is
Answer: Wavelength


◉ As the wave's frequency increases, the wavelength
Answer: Decreases


◉ As a wave's wavelength increases, its frequency
Answer: its frequency increases


◉ Wavelength is generally measured in
Answer: meters