Area has dimensions of M^0L^2T^-2.

Angle is a dimensionless quantity.

Velocity has the dimension M^0L^1T^-1.

Work has the dimension M^1L^2T^-2.

Displacement is a vector quantity as it has both magnitude and direction, while speed, distance, and mass are scalar quantities.

In an isolated system, energy, momentum, and mass are all conserved.

The azimuthal quantum number (l) describes the shape of the atomic orbital.

Systematic errors are consistent and repeatable inaccuracies, often due to calibration errors.

Significant figures include all non-zero digits and any zeros between them or trailing after a decimal point.

Electric current is defined as the flow of electrons in a conductor.

Sound waves require a medium (solid, liquid, or gas) to travel and cannot propagate through a vacuum.

Surface tension is a property of liquids that causes them to minimize their surface area, allowing them to form droplets.

The critical angle is defined as the angle of incidence above which total internal reflection occurs, and it is always less than 90 degrees.

The image formed by a plane mirror is virtual, erect, and located behind the mirror at the same distance as the object.

The magnetic field due to a current-carrying loop is strongest at the center of the loop and decreases as you move away from the center.

The magnetic field due to a long straight conductor decreases with increasing distance from the conductor.

Inside a long solenoid, the magnetic field is uniform and parallel to the axis of the solenoid, provided the solenoid is long enough.

According to Ohm's Law, current (I) is directly proportional to voltage (V) when resistance (R) is constant.

A concave lens diverges light rays, and it has a negative focal length.

A convex mirror always forms virtual images and has a negative focal length.

A plane mirror always forms a virtual image that is the same size as the object and is erect.

A concave lens always forms a virtual image that cannot be projected on a screen; hence, a real image cannot be formed.

An ideal gas is considered to have no volume and no intermolecular forces, making option D correct.

For capacitors in parallel, the total capacitance is the sum of the individual capacitances: C_total = C₁ + C₂ + ...

Electric current flows from positive to negative in a circuit.

Laminar flow is characterized by smooth and orderly fluid motion, typically occurring at low velocities.

A solenoid produces a uniform magnetic field inside and negligible field outside when it is long compared to its diameter.

Inside a long solenoid, the magnetic field is uniform and parallel to the axis of the solenoid, provided the solenoid is long enough.

The energy of the emitted photon is highest for the transition from n=2 to n=1, as it involves the largest difference in energy levels.

The unit used to measure electric current is Ampere (A).