Explanation

Explanation

Explanation

To find the resultant of two forces acting at right angles, use the Pythagorean theorem:

Resultant = √(3² + 4²) = √(9 + 16) = √25 = 5N

Explanation

Explanation

Using the formula: λ = c / f (where λ = wavelength, c = speed of light, and f = frequency)

λ = (3 × 10^8 m/s) / (90 × 10^6 Hz) ≈ 3.33 m.

Explanation

The separation of visible light into its different colours is known as dispersion.

When white light passes through a prism, it splits into 7 colors, forming a spectrum known as a rainbow:

1. Red
2. Orange
3. Yellow
4. Green
5. Blue
6. Indigo
7. Violet

Explanation

Explanation

Tally is an accounting software, which is an application software, not a system software.

System software includes:

• Assembler: Translates assembly language into machine code.
• Compiler: Translates high-level language into machine code.
• Interpreter: Directly executes high-level language code without compiling.

Explanation

In pair production, several quantities are conserved

Let's evaluate each option:

- Charge:

A charge is conserved in pair production, as the total charge before and after the interaction remains the same

Due to the opposite but equal charges of the electron and positron.

- Energy:

Energy is conserved in pair production, with the total energy before the interaction equal to the sum of the energies of the electron and positron after the interaction.

- Linear Momentum:

Linear momentum is conserved in pair production, with the total momentum before the interaction equal to the sum of the momenta of the particles involved.

Explanation

• Sound energy is the energy created by the vibration of particles, such as molecules or atoms, as they oscillate back and forth.
• This vibration creates a disturbance that travels through a medium, like air, water, or solids, and is perceived as sound.