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Which quantity remains conserved in an isolated system?
একটি বিচ্ছিন্ন (isolated) ব্যবস্থায় কোনটি সংরক্ষিত থাকে?
Practice MCQ for SSC, UPSC, RRB Exams
A. Force
A. বল
B. Energy
B. শক্তি
C. Momentum
C. ভরবেগ
D. Acceleration
D. ত্বরণ
Correct Answer: C
সঠিক উত্তর: C
Explanation
ব্যাখ্যা
In an
isolated system
, no external forces act, so certain physical quantities remain
conserved
.
Energy
is conserved according to the
Law of Conservation of Energy
, meaning the total energy of the system remains constant.
Momentum
is conserved according to the
Law of Conservation of Momentum
, meaning the total momentum of the system does not change.
Quantities like
force
and
acceleration
are not inherently conserved; they depend on interactions and external influences.
একটি বিচ্ছিন্ন ব্যবস্থায় কোনো বাহ্যিক বল প্রয়োগ হয় না, তাই কিছু ভৌত পরিমাণ
সংরক্ষিত
থাকে।
শক্তি সংরক্ষণ নীতি
অনুযায়ী শক্তি সংরক্ষিত থাকে, অর্থাৎ ব্যবস্থার মোট শক্তি স্থির থাকে।
ভরগতি সংরক্ষণ নীতি
অনুযায়ী ভরগতি সংরক্ষিত থাকে, অর্থাৎ ব্যবস্থার মোট ভরগতি পরিবর্তিত হয় না।
বল
এবং
ত্বরণ
এই ধরনের স্বাভাবিকভাবে সংরক্ষিত পরিমাণ নয়; এগুলো বাহ্যিক প্রভাব এবং ক্রিয়ার উপর নির্ভর করে।
Related Questions
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