Various options are provided as possible answers to the following questions - NSC Technical Sciences - Question 1 - 2023 - Paper 1

In the scenario described, since the object accelerates to the left, it implies that the force F₂ is greater than F₁. Hence, the correct answer is C. F₁ < F₂.

An isolated system is recognized as one where no net external force acts upon it. Thus, the correct answer is A. the net external force acting on it is zero.

The gradient of the work versus time graph represents the rate of doing work, which is defined as Power. Therefore, the correct answer is C. Power.

Hooke's law states that stress is directly proportional to strain, provided the elastic limit is not exceeded. Thus, the correct answer is A. directly proportional to strain when the elastic limit is not exceeded.

Pressure is defined as force per unit area, and its SI unit is the pascal (Pa). Therefore, the correct answer is C. pascal.

Dispersion of light refers to the phenomenon where light splits into its constituent colors as it passes through different media. This corresponds to statement D. breaking of white light into its component colours.

The standard unit for measuring frequency is Hertz (Hz). Hence, the correct answer is C. Hertz.

Capacitance increases with the use of a dielectric material with a higher dielectric constant. Thus, the correct answer is A. a dielectric with a higher dielectric constant is used.

The device primarily used for converting electric energy into mechanical energy is commonly known as a motor. Therefore, the correct answer is D. motor.