Explanation

• Frequency is the number of occurrences of a repeating event per unit of time.
• The SI unit of frequency is the hertz (Hz).
• 1 Hz = 1 cycle or vibration per second
• Unit: Hz = s⁻¹ (per second)
• Named after physicist Heinrich Hertz
• Used for waves, oscillations, sound, and electromagnetic radiation
• Derivations from other quantities: f = 1 / T
• Dimension T^−1

Explanation

When springs are attached end to end, it is series combination.

Formula for series: 1/k_eq = 1/k1 + 1/k2

k1 = k, k2 = k

1/k_eq = 1/k + 1/k = 2/k

k_eq = k/2

Last verified on 25-10-2026

Explanation

Formula: v^2 = u^2 + 2as

u = 12 m/s

v = 24 m/s

s = 180 m

24^2 = 12^2 + 2 x a x 180

576 = 144 + 360a

576 - 144 = 360a

432 = 360a

a = 432 / 360

a = 1.20 m/s²

Last verified on 25-10-2026

Explanation

When an electron loses all its kinetic energy in a single collision, the maximum possible energy is transferred to one X-ray photon.

The maximum photon energy produces the maximum frequency (f_max).

Frequency and wavelength are inversely proportional, according to c=fλ.

Therefore, maximum frequency corresponds to minimum wavelength (λ_min).

Last verified on 25-10-2026

Explanation

• When a charged particle moves perpendicular to a uniform magnetic field, the magnetic force acts toward the center of its circular path.
• This magnetic force provides the centripetal force required for circular motion.
• The magnetic force is given by F=qvB when the particle moves perpendicular to the field.

Last verified on 25-10-2026