Chemistry, asked by mondalpintu681, 3 months ago

l) শব্দের তীব্রতার নিরাপদ সীমা হল -
(a) 65 dB, (b) 60 dB, (c) 90 dB,
(c) 90 dB, (d) 100 dB
(a) তির্যক তরঙ্গ, (b) তড়িৎচুম্বকীয় তরঙ্গ,

Answers

Answered by santulaha04

2

Answer:

60 db frnd

Explanation:

hiii i am bengali

Answered by shreya567890

0

Bengali se mat poocha karo yaar

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