Q. A radar system can detect objects up to a distance of 100 km. If it scans at a speed of 20 km/h, how long will it take to complete a full scan? (2023)
A.
4 hours
B.
5 hours
C.
6 hours
D.
7 hours
Solution
Time = Distance / Speed = 100 km / 20 km/h = 5 hours
Q. A tank can be filled by a pipe in 6 hours and emptied by another pipe in 8 hours. If both pipes are opened together, how long will it take to fill the tank? (2020)
A.
12 hours
B.
24 hours
C.
48 hours
D.
18 hours
Solution
Rate of filling = 1/6 tank/hour, Rate of emptying = 1/8 tank/hour. Combined rate = 1/6 - 1/8 = 1/24 tank/hour. Time = 1 / (1/24) = 24 hours.
Q. A tank can be filled by two pipes in 12 hours and 15 hours respectively. How long will it take to fill the tank if both pipes are opened together? (2021)
A.
7 hours
B.
8 hours
C.
9 hours
D.
10 hours
Solution
Rate of first pipe = 1/12, Rate of second pipe = 1/15. Combined rate = 1/12 + 1/15 = 1/7.2. Time = 7.2 hours.
Staying updated with Defence News is crucial for students preparing for various exams in India. Understanding current affairs related to defence not only enhances your general knowledge but also plays a significant role in scoring better in objective exams. Practicing MCQs and objective questions on Defence News helps reinforce your learning and prepares you for important questions that often appear in exams.
What You Will Practise Here
Key developments in Indian defence policies
Recent military exercises and their significance
Important defence agreements and collaborations
Current defence technology advancements
Major defence budgets and allocations
Roles of various branches of the Indian Armed Forces
Historical milestones in India's defence history
Exam Relevance
Defence News is a recurring theme in various examinations including CBSE, State Boards, NEET, and JEE. Questions often focus on recent events, key figures, and policies related to national security. Common question patterns include multiple-choice questions that test your understanding of current affairs and their implications on national and international levels.
Common Mistakes Students Make
Overlooking the importance of recent events in Defence News
Confusing similar terms related to defence policies
Neglecting to connect historical events with current developments
Misunderstanding the roles of different branches of the armed forces
FAQs
Question: What types of questions can I expect on Defence News in exams? Answer: You can expect multiple-choice questions focusing on recent developments, important figures, and defence policies.
Question: How can I improve my knowledge of Defence News for exams? Answer: Regularly read news articles, practice MCQs, and review important concepts related to defence.
Start solving Defence News MCQ questions today to enhance your understanding and boost your exam preparation. Remember, consistent practice is key to success!
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