Skip to content
Login Register

#wave interference

4 public questions tagged with this topic.

PHYSICS

Two waves of frequencies 500 Hz and 504 Hz interfere to produce beats. How many beats are heard in 10 seconds?

Given: Two waves of frequencies 500 Hz and 504 Hz interfere to produce beats. How many beats are heard in 10 seconds? Formula: Beat frequency: v_{beat = v_1 - v_2 = 504 - 500 = 4 Hz. Substitution & Calculation: Beats in 10 s: 4 × 10 = 40 . Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

Ref: NCERT Physics Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII, continuing as per NCERT advisory for 2026-27),Topic: Fundamental laws, definitions and applications as per latest NCERT. The section explains governing laws, formulas like μ₀ = 4π.

View Details
PHYSICS

What is the distance of the fifth dark fringe from the ntral maximum in a double-slit experiment if lambda = 650 nm, d =

Given: What is the distance of the fifth dark fringe from the ntral maximum in a double-slit experiment if lambda = 650 nm, d = 0.5 mm, and D = 1.0 m ? Formula: Dark fringe position x_n = frac(n + 1/2) lambda Dd. Substitution & Calculation: For the fifth dark fringe, n = 4 . lambda = 6.5 × 10⁻⁷m, d = 5.0 × 10⁻⁴m, D = 1.0 m . x_4 = frac(4 + 1/2) × 6.5 × 10⁻⁷ × 1.05.0 × 10⁻⁴= frac4.5 × 6.5 × 10⁻⁷⁵.0 × 10⁻⁴= 5.85 × 10⁻³m = 5.85 mm . Final Result: The computed value matches expected outcome and confirms correct choice as per latest NCERT 2026-27.

Ref: NCERT Physics Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII, continuing as per NCERT advisory for 2026-27), Chapter: Wave Optics (Latest NCERT 2026-27), Topic: Interference, phase difference φ = (2π/λ)Δ, path difference 5λ/4 and double-slit experiment. The section explains governing laws, formulas like μ₀ = 4π × 10⁻⁷ T·m/A, SI units and illustrative examples. Page number.

View Details