PPSC Deputy Accountant Past Paper 2026 Solved (Batch 2)

Correct answer: 380–700 nm. Human eyes see wavelengths of about 380 nm (violet) to 700 nm (red).

Background: Visible light is a small part of the electromagnetic spectrum.

• 100–300 nm: 100–300 nm lies in the ultraviolet range.
• 500–900 nm: 500–900 nm extends into the infrared range.
• None of these: “None of these” is incorrect because 380–700 nm is correct.

Did you know? The colours are remembered as VIBGYOR.

Memory trick: 380 to 700 nm.

Correct answer: Satellite. A body that orbits a planet is called a satellite, either natural (like the Moon) or artificial.

Background: Artificial satellites are used for communication, weather, and navigation.

• Jet: A jet is an aircraft.
• Star: A star produces its own light and heat.
• Asteroid: An asteroid orbits the Sun, not a planet.

Did you know? The first artificial satellite was Sputnik 1 in 1957.

Memory trick: Orbits a planet = satellite.

Correct answer: Dielectric heating. Microwave ovens heat food primarily through dielectric (dipolar) heating, where polar water molecules rotate rapidly in response to an alternating high-frequency electromagnetic field (2.45 GHz).

Background: While older guidebooks loosely referenced resonance, dielectric heating is the standard scientific explanation.

• Reflection: Metal walls reflect microwaves to keep them contained inside the cavity.
• Refraction: Refraction is the bending of waves passing through different media.
• Damped oscillation: Refers to oscillations that decay in amplitude over time.

Did you know? Percy Spencer discovered microwave cooking in 1945 when a chocolate bar melted in his pocket near an active radar magnetron.

Memory trick: Microwave heating = Dielectric (dipolar water rotation) heating.

Correct answer: Einstein. Albert Einstein proposed the theory of relativity (special in 1905, general in 1915).

Background: The theory changed our understanding of space, time, and gravity.

• Kepler: Kepler described the laws of planetary motion.
• Newton: Newton described the laws of motion and gravity.
• None of these: “None of these” is incorrect because Einstein is correct.

Did you know? Einstein won the Nobel Prize in 1921 for the photoelectric effect, not relativity.

Memory trick: Relativity → Einstein → E = mc².

Correct answer: 1, 2 and 3. Blood pressure depends on how narrow the vessels are, how strongly the ventricle pumps, and how much blood returns to the heart.

Background: Narrow vessels raise blood pressure, and wider vessels lower it.

• 1 only: Vessel diameter is only one of the factors.
• 3 only: Venous return is only one of the factors.
• 2, 3 only: Ventricle pressure and venous return are important, but vessel diameter also matters.

Did you know? Blood pressure is measured with a sphygmomanometer.

Memory trick: Vessels + pump + return = all three.

Correct answer: Displacement. Displacement is the shortest straight-line distance from the starting point to the final position, with a direction.

Background: Displacement is a vector, while distance is a scalar.

• Velocity: Velocity is the rate of change of displacement.
• Acceleration: Acceleration is the rate of change of velocity.
• Force: Force is a push or pull.

Did you know? If you return to the starting point, your displacement is zero.

Memory trick: Displacement = start to end, straight.