MDCAT 2026 MCQs

Opposite-phase amplitudes subtract.
The resultant amplitude is |5-3| = 2 cm.

Greater wave amplitude generally means greater intensity.
Perceived loudness is also frequency-dependent.

For the fundamental, the string length is half a wavelength.
λ=2L=2.4 m.

Approach raises observed frequency, while separation lowers it.
The effect occurs for sound and electromagnetic waves.

The fundamental wavelength is 2L=1.5 m.
F=v/λ=300/1.5 = 200 Hz.

Frequency is cycles divided by time.
20/5 = 4 Hz.

For an open pipe, fundamental wavelength is 2L=1.7 m.
F=340/1.7 = 200 Hz.

Period is the reciprocal of frequency.
T=1/5 = 0.2 s.

For a closed pipe, fundamental wavelength is 4L=3.4 m.
F=340/3.4 = 100 Hz.

Use v=fλ.
λ=12/3 = 4 m.

Electric charge occurs in positive and negative forms.
Like charges repel and unlike charges attract.

Wave speed is v=fλ.
V=8×2.5 = 20 m/s.