Explanation

• Photon energy depends on the frequency of light.
• Higher frequency means higher energy.
• This relation was explained by Max Planck.
• Photon is a tiny packet of light energy.

Last verified on 07-05-2026

Explanation

• In the photoelectric effect, light ejects electrons from a metal surface.
• Increasing light intensity increases the number of photons hitting the surface.
• More photons release more electrons.
• The photoelectric effect supported the quantum theory of light.
• Albert Einstein received the Nobel Prize for explaining this effect.

Last verified on 07-05-2026

Explanation

• Neap tides occur when the Sun and Moon pull Earth’s water from different directions.
• This happens when the Moon is at a right angle (90°) to the Earth-Sun line.
• During neap tides, the difference between high and low tide is small.
• Neap tides occur twice every lunar month.
• Spring tides happen during full moon and new moon phases.

Last verified on 07-05-2026

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