NEET 2021 Model Test Paper 4

Question : 37 of 180

Marks: +1, -0

The equation of a plane progressive wave is y = 0.02 sin 8π[t−

] . When it is reflected at a rarer medium (medium with higher velocity) at x = 0, its amplitude becomes 75% of its previous value. The equation of the reflected wave is

y = 0.02 sin 8π[t−
x
20
]
y = 0.02 sin 8π[t+
x
20
]
y = + 0.015 sin 8π[t+
x
20
]
y = - 0.015 sin 8π[t+
x
20
]

Validate

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