Explanation

• Laser light is monochromatic, meaning it has one color.
• It contains only one wavelength and one frequency.
• This makes laser light very pure and focused.
• They are used in surgery, barcode scanners, and fiber optics communication.

Additional information:

• Polychromatic (white light) → Multiple wavelengths

Last verified on 07-05-2026

Explanation

• Alpha, Beta, Gamma, and X-rays are types of radiation.
• In an electric field, charged particles are deflected.
• Beta radiation is light and carries a negative charge, so it bends the most.

Additional information:

Deflection in Electric Field (Comparison)

• Alpha (α) rays → Less deflected (heavy mass + positive charge)
• Gamma (γ) rays → No deflection (no charge)
• X-rays → No deflection (neutral electromagnetic waves)

Last verified on 07-05-2026

Explanation

• Quantum theory states that energy levels in atoms are discrete (fixed and separate).
• Electrons can only exist in specific energy levels, not in between.
• They absorb or emit energy when moving from one level to another.

Last verified on 06-05-2026

Explanation

• In the photoelectric effect, electrons are emitted only if light has a minimum required frequency (threshold frequency).
• Increasing intensity alone cannot eject electrons if frequency is too low.
• Thus, frequency of light is the key factor.

Last verified on 06-05-2026

Explanation

• High tides occur when the gravitational pull of the Moon and Sun align.
• This happens during new moon and full moon phases.
• Their combined force produces stronger tides (spring tides).

Last verified on 06-05-2026