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Principles of Communication: Modulation (AM/FM) and Demodulation MCQs

Prepare for Principles of Communication: Modulation (AM/FM) and Demodulation MCQs with verified questions, past-paper solutions, and conceptual explanations for CSS, PMS, FPSC, PPSC, and NTS examinations.

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Topic Notes: Physics

These notes summarize the key preparation context before you attempt the MCQs. Review the topic focus, then practice the questions below with answers and explanations.

Quick Overview

Practice Physics MCQs to prepare for CSS, PMS, FPSC, PPSC, SPSC, KPPSC, BPSC, NTS, and university entry tests in Pakistan. This section covers key theoretical concepts, syllabus topics, and repeated past paper questions related to Physics.

Topic-Wise Breakdown
Structured subject modules organized by difficulty and exam frequency.
Verified Answer Keys
Detailed explanations cross-referenced with standard textbooks and commission keys.
Complete Coverage
Covers fundamental definitions, advanced problem-solving, and recent exam trends.

How to Prepare Physics MCQs for Competitive Exams

Review each sub-topic systematically. Start with fundamental concepts, practice multiple-choice question sets under timed conditions, and note down questions you missed in your revision tracker. Select a specific topic from the list below to begin practice.

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327711
A town's population is 50,000. It increases by 10% every year. What will be the population after 1 year?
327712
The population of a village is 8000. It decreases by 5% annually. What will it be after 2 years?
327713
The population of a town is 10,000. It increases by 10% in the first year and 20% in the second year. What is the population after 2 years?
327714
In a company, 40% are male, and 60% of males earn >30k. If 45% of total earn >30k, what fraction of female employees earn >30k?
327715
A person gave 20% of his income to his elder son, 30% of the remaining to the younger son, and 10% of the balance to a trust. He is left with 10080. His income was?
327716
Monthly income of A is 30% more than B. If A's income is Rs 6500, what is B's income?
327717
If A's income is 40% less than that of B, how much percent is B's income more than A's?
327718
A man spends 75% of his income. His income increases by 20% and expenditure increases by 10%. His savings increase by?
327719
By saving 15% of his salary, a person saves Rs 300. His monthly salary is?
327720
Rahul's salary is Rs 50,000. He spends 10% on rent, 20% of the remainder on food. How much does he save?