Q. In a magnetic field, the force on a charged particle is zero when it moves:
A.
Perpendicular to the field
B.
Parallel to the field
C.
At an angle of 30 degrees
D.
At an angle of 90 degrees
Show solution
Solution
The magnetic force on a charged particle is zero when it moves parallel to the magnetic field, as the angle θ = 0° results in sin(θ) = 0.
Correct Answer:
B
— Parallel to the field
Learn More →
Q. In a material with a resistivity of 2 x 10^-8 Ω·m, what is the resistance of a 10 m long wire with a cross-sectional area of 1 mm²?
A.
0.02 Ω
B.
0.2 Ω
C.
2 Ω
D.
20 Ω
Show solution
Solution
Resistance R = ρ(L/A) = 2 x 10^-8 * (10 / (1 x 10^-6)) = 0.2 Ω.
Correct Answer:
B
— 0.2 Ω
Learn More →
Q. In a material with a resistivity of 2 x 10^-8 Ω·m, what is the resistance of a 3 m long wire with a cross-sectional area of 1 mm²?
A.
0.006 Ω
B.
0.018 Ω
C.
0.024 Ω
D.
0.036 Ω
Show solution
Solution
Resistance R = ρ(L/A) = 2 x 10^-8 * (3 / (1 x 10^-6)) = 0.024 Ω.
Correct Answer:
C
— 0.024 Ω
Learn More →
Q. In a material, if the strain energy density is given by U, what is the expression for the total strain energy stored in a volume V of the material?
A.
U * V
B.
U / V
C.
U + V
D.
U - V
Show solution
Solution
The total strain energy stored in a volume V is given by the product of strain energy density U and volume V, i.e., Total Energy = U * V.
Correct Answer:
A
— U * V
Learn More →
Q. In a material, if the strain is 0.01 and the Young's modulus is 200 GPa, what is the stress in the material?
A.
2 MPa
B.
20 MPa
C.
200 MPa
D.
2000 MPa
Show solution
Solution
Stress = Young's modulus * strain = 200 GPa * 0.01 = 2 GPa = 2000 MPa.
Correct Answer:
C
— 200 MPa
Learn More →
Q. In a mathematical context, what does the term 'algorithm' refer to?
A.
A type of geometric shape
B.
A step-by-step procedure for calculations
C.
A statistical method for data analysis
D.
A theorem in number theory
Show solution
Solution
An algorithm is defined as a step-by-step procedure for calculations, widely used in various fields of mathematics and computer science.
Correct Answer:
B
— A step-by-step procedure for calculations
Learn More →
Q. In a measurement, if the error is systematic, what can be said about the results? (2020)
A.
They are random
B.
They are biased
C.
They are accurate
D.
They are precise
Show solution
Solution
Systematic errors lead to biased results, consistently deviating from the true value.
Correct Answer:
B
— They are biased
Learn More →
Q. In a measurement, if the error is systematic, what does it indicate? (2020)
A.
Random fluctuations
B.
Consistent bias
C.
Human error
D.
Instrument malfunction
Show solution
Solution
Systematic errors indicate a consistent bias in measurements.
Correct Answer:
B
— Consistent bias
Learn More →
Q. In a measurement, if the precision is high, it means: (2019)
A.
The measurements are close to the true value
B.
The measurements are consistent with each other
C.
The measurements have low uncertainty
D.
The measurements are accurate
Show solution
Solution
High precision indicates that repeated measurements yield similar results.
Correct Answer:
B
— The measurements are consistent with each other
Learn More →
Q. In a measurement, if the systematic error is known, how can it be corrected? (2020)
A.
By averaging multiple readings
B.
By subtracting the error from the measured value
C.
By ignoring the error
D.
By taking more measurements
Show solution
Solution
Systematic errors can be corrected by subtracting the known error from the measured value.
Correct Answer:
B
— By subtracting the error from the measured value
Learn More →
Q. In a measurement, if the uncertainty is ±0.1 g, what does it indicate? (2023)
A.
The measurement is exact
B.
The measurement can vary by 0.1 g
C.
The measurement is inaccurate
D.
The measurement is precise
Show solution
Solution
An uncertainty of ±0.1 g indicates that the measurement can vary by 0.1 g from the reported value.
Correct Answer:
B
— The measurement can vary by 0.1 g
Learn More →
Q. In a measurement, if the uncertainty is ±0.5 cm, what is the range of the measurement 10.0 cm? (2023)
A.
9.5 cm to 10.5 cm
B.
9.0 cm to 11.0 cm
C.
10.0 cm to 10.5 cm
D.
10.0 cm to 11.0 cm
Show solution
Solution
The range is calculated as (10.0 - 0.5) cm to (10.0 + 0.5) cm, which is 9.5 cm to 10.5 cm.
Correct Answer:
A
— 9.5 cm to 10.5 cm
Learn More →
Q. In a measurement, if the value is reported as 3.00 kg, how many significant figures are there? (2019)
Show solution
Solution
The number 3.00 kg has three significant figures.
Correct Answer:
B
— 3
Learn More →
Q. In a Michelson interferometer, what happens to the fringe pattern if one of the mirrors is moved away from the beam splitter? (2020)
A.
Fringe pattern moves to the left
B.
Fringe pattern moves to the right
C.
Fringe pattern disappears
D.
Fringe pattern becomes brighter
Show solution
Solution
Moving one mirror changes the path length, causing the fringe pattern to shift to the right.
Correct Answer:
B
— Fringe pattern moves to the right
Learn More →
Q. In a Michelson interferometer, what happens to the interference pattern if one of the mirrors is moved?
A.
The pattern disappears
B.
The pattern shifts
C.
The pattern becomes brighter
D.
The pattern becomes dimmer
Show solution
Solution
Moving one of the mirrors changes the path length of one beam, causing a shift in the interference pattern.
Correct Answer:
B
— The pattern shifts
Learn More →
Q. In a Michelson interferometer, what happens to the interference pattern if one of the mirrors is moved away from the beam splitter?
A.
Fringes move closer
B.
Fringes move apart
C.
Fringes disappear
D.
No change in pattern
Show solution
Solution
Moving one mirror changes the path length of one beam, causing the fringes to move apart or closer depending on the direction of movement.
Correct Answer:
B
— Fringes move apart
Learn More →
Q. In a Michelson interferometer, what happens to the interference pattern if one of the mirrors is moved slightly?
A.
The pattern remains unchanged
B.
The pattern shifts
C.
The pattern disappears
D.
The pattern becomes brighter
Show solution
Solution
Moving one of the mirrors changes the path length for one of the beams, causing a shift in the interference pattern.
Correct Answer:
B
— The pattern shifts
Learn More →
Q. In a Michelson interferometer, what happens when one of the mirrors is moved slightly?
A.
No change in interference pattern
B.
Fringes shift
C.
Fringes disappear
D.
Fringes become brighter
Show solution
Solution
Moving one of the mirrors changes the path length, causing a shift in the interference pattern (fringes).
Correct Answer:
B
— Fringes shift
Learn More →
Q. In a mixed graph showing sales data for four products (A, B, C, D) over three months, which product had the highest sales in March?
A.
Product A
B.
Product B
C.
Product C
D.
Product D
Show solution
Solution
Product B had the highest sales in March with 150 units sold.
Correct Answer:
B
— Product B
Learn More →
Q. In a mixed graph showing sales data for three products (A, B, C) over four quarters, which product had the highest total sales?
A.
Product A
B.
Product B
C.
Product C
D.
All equal
Show solution
Solution
Product B had the highest total sales across all quarters.
Correct Answer:
B
— Product B
Learn More →
Q. In a mixed graph showing the growth of two investments (I1 and I2) over a year, which investment had a higher growth rate?
A.
Investment I1
B.
Investment I2
C.
Both had equal growth
D.
Data not sufficient
Show solution
Solution
Investment I1 had a higher growth rate as indicated in the mixed graph.
Correct Answer:
A
— Investment I1
Learn More →
Q. In a mixed graph, the average temperature for three cities (A, B, C) over a week is shown. If City A's average temperature is 30°C, City B's is 25°C, and City C's is 20°C, what is the average temperature across all three cities?
A.
25°C
B.
26°C
C.
27°C
D.
28°C
Show solution
Solution
The average temperature is (30 + 25 + 20) / 3 = 25°C.
Correct Answer:
C
— 27°C
Learn More →
Q. In a mixed graph, the total revenue for three different regions (North, South, East) is shown. If the North region contributed $300,000, South $450,000, and East $250,000, which region contributed the least?
A.
North
B.
South
C.
East
D.
All equal
Show solution
Solution
The East region contributed the least with $250,000.
Correct Answer:
C
— East
Learn More →
Q. In a mixture of 30 liters, the ratio of sugar to water is 1:5. How much sugar is in the mixture?
A.
5 liters
B.
6 liters
C.
4 liters
D.
3 liters
Show solution
Solution
Total parts = 1 + 5 = 6. Sugar = (1/6) * 30 = 5 liters.
Correct Answer:
A
— 5 liters
Learn More →
Q. In a mixture of 40 liters, the ratio of milk to water is 3:1. How much water is in the mixture?
A.
10 liters
B.
15 liters
C.
20 liters
D.
30 liters
Show solution
Solution
Total parts = 3 + 1 = 4. Volume of water = (1/4) * 40 = 10 liters.
Correct Answer:
A
— 10 liters
Learn More →
Q. In a mixture of 50 liters, the ratio of oil to water is 3:2. How much water is in the mixture?
A.
20 liters
B.
30 liters
C.
10 liters
D.
25 liters
Show solution
Solution
Total parts = 3 + 2 = 5. Water = (2/5) * 50 = 20 liters.
Correct Answer:
A
— 20 liters
Learn More →
Q. In a mixture of 50 liters, the ratio of two chemicals is 4:1. How many liters of the first chemical are there?
A.
40 liters
B.
30 liters
C.
20 liters
D.
10 liters
Show solution
Solution
Total parts = 4 + 1 = 5. Volume of the first chemical = (4/5) * 50 = 40 liters.
Correct Answer:
A
— 40 liters
Learn More →
Q. In a mixture of 60 liters, the ratio of milk to water is 2:1. How much water is in the mixture?
A.
20 liters
B.
30 liters
C.
40 liters
D.
50 liters
Show solution
Solution
Total parts = 2 + 1 = 3. Water = (1/3) * 60 = 20L.
Correct Answer:
B
— 30 liters
Learn More →
Q. In a mixture of 60 liters, the ratio of water to alcohol is 2:3. How many liters of alcohol are in the mixture?
A.
36 liters
B.
24 liters
C.
30 liters
D.
18 liters
Show solution
Solution
Total parts = 2 + 3 = 5. Alcohol's part = (3/5) * 60 = 36 liters.
Correct Answer:
A
— 36 liters
Learn More →
Q. In a mixture of gases, how does the RMS speed depend on the individual gas components?
A.
It depends only on the lightest gas
B.
It is the weighted average of the RMS speeds of the components
C.
It is the sum of the RMS speeds of the components
D.
It is independent of the gas components
Show solution
Solution
The RMS speed of a mixture of gases is the weighted average of the RMS speeds of the individual components, taking into account their molar masses.
Correct Answer:
B
— It is the weighted average of the RMS speeds of the components
Learn More →
Showing 14071 to 14100 of 31669 (1056 Pages)
Major Competitive Exams MCQ & Objective Questions
Major Competitive Exams play a crucial role in shaping the academic and professional futures of students in India. These exams not only assess knowledge but also test problem-solving skills and time management. Practicing MCQs and objective questions is essential for scoring better, as they help in familiarizing students with the exam format and identifying important questions that frequently appear in tests.
What You Will Practise Here
Key concepts and theories related to major subjects
Important formulas and their applications
Definitions of critical terms and terminologies
Diagrams and illustrations to enhance understanding
Practice questions that mirror actual exam patterns
Strategies for solving objective questions efficiently
Time management techniques for competitive exams
Exam Relevance
The topics covered under Major Competitive Exams are integral to various examinations such as CBSE, State Boards, NEET, and JEE. Students can expect to encounter a mix of conceptual and application-based questions that require a solid understanding of the subjects. Common question patterns include multiple-choice questions that test both knowledge and analytical skills, making it essential to be well-prepared with practice MCQs.
Common Mistakes Students Make
Rushing through questions without reading them carefully
Overlooking the negative marking scheme in MCQs
Confusing similar concepts or terms
Neglecting to review previous years’ question papers
Failing to manage time effectively during the exam
FAQs
Question: How can I improve my performance in Major Competitive Exams?Answer: Regular practice of MCQs and understanding key concepts will significantly enhance your performance.
Question: What types of questions should I focus on for these exams?Answer: Concentrate on important Major Competitive Exams questions that frequently appear in past papers and mock tests.
Question: Are there specific strategies for tackling objective questions?Answer: Yes, practicing under timed conditions and reviewing mistakes can help develop effective strategies.
Start your journey towards success by solving practice MCQs today! Test your understanding and build confidence for your upcoming exams. Remember, consistent practice is the key to mastering Major Competitive Exams!
