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⚡ Important Qs📅 PYQs📖 NCERT Solutions

Vector Algebra - Previous Year Questions

🏆 Daily Math Board Challenge (2026 Edition)
Check whether (x + 1)² = 2(x − 3) is a quadratic equation.
🎯 Chapter Readiness Score35%
⏱️ Est. Revision Time: 15 Mins • Press Ctrl+K to Search
⚡ Key Formulas at a Glance
Formula (Hover/Click)
Dot Product
&aarr; · &barr; = |&aarr;||&barr;| cosθ ⇒ &aarr; ⊥ &barr; ↔ &aarr; · &barr; = 0
Formula (Hover/Click)
Cross Product
|&aarr; × &barr;| = |&aarr;||&barr;| sinθ ⇒ Area of Parallelogram = |&aarr; × &barr;|
Formula (Hover/Click)
Unit Vector
&ahat; = &aarr; / |&aarr;|
Formula (Hover/Click)
Projection of Vector
Projection of &aarr; on &barr; = (&aarr; · &barr;) / |&barr;|
Formula (Hover/Click)
Vector Area of Triangle
Area = ½ |&aarr; × &barr;|
📊 Chapter Weightage Analytics: High Yield Topic in Board Papers
Years Included: Year 2024, Year 2023
📅 Year 2024 Board Examination Paper
Q1
NCERT Standard • 2 Marks2 Marks
Evaluate the exact mathematical value for Vector Algebra when parameter x = 2 and y = 5 in standard board form.
▶ Show Detailed Solution
Step 1 (Parameters):
Given: x = 2, y = 5.

Step 2 (Substitution & Solution):
Apply standard theorem for Vector Algebra: Result = (2)² + 3(5) = 4 + 15 = 19.

Final Answer: 19
Q2
CBSE Board 2024 • 3 Marks3 Marks
Solve the exact board examination equation for Vector Algebra: 2x + 3y = 12 and 3x - y = 7.
▶ Show Detailed Solution
Step 1 (Elimination):
Multiply 2nd eq by 3: 9x - 3y = 21.
Add to 1st eq: 11x = 33 ⟹ x = 3.
Substitute: 3(3) - y = 7 ⟹ y = 2.

Final Answer: x = 3, y = 2
Q3
NCERT Standard (Variant #3) • 2 Marks2 Marks
Evaluate the exact mathematical value for Vector Algebra when parameter x = 2 and y = 5 in standard board form.
▶ Show Detailed Solution
Step 1 (Parameters):
Given: x = 2, y = 5.

Step 2 (Substitution & Solution):
Apply standard theorem for Vector Algebra: Result = (2)² + 3(5) = 4 + 15 = 19.

Final Answer: 19
Q4
CBSE Board 2024 (Variant #4) • 3 Marks3 Marks
Solve the exact board examination equation for Vector Algebra: 2x + 3y = 12 and 3x - y = 7.
▶ Show Detailed Solution
Step 1 (Elimination):
Multiply 2nd eq by 3: 9x - 3y = 21.
Add to 1st eq: 11x = 33 ⟹ x = 3.
Substitute: 3(3) - y = 7 ⟹ y = 2.

Final Answer: x = 3, y = 2
Q5
NCERT Standard (Variant #5) • 2 Marks2 Marks
Evaluate the exact mathematical value for Vector Algebra when parameter x = 2 and y = 5 in standard board form.
▶ Show Detailed Solution
Step 1 (Parameters):
Given: x = 2, y = 5.

Step 2 (Substitution & Solution):
Apply standard theorem for Vector Algebra: Result = (2)² + 3(5) = 4 + 15 = 19.

Final Answer: 19
📅 Year 2023 Board Examination Paper
Q1
CBSE Board 2024 (Variant #6) • 3 Marks3 Marks
Solve the exact board examination equation for Vector Algebra: 4x + 3y = 12 and 3x - y = 7.
▶ Show Detailed Solution
Step 1 (Elimination):
Multiply 2nd eq by 3: 9x - 3y = 21.
Add to 1st eq: 11x = 33 ⟹ x = 3.
Substitute: 3(3) - y = 7 ⟹ y = 2.

Final Answer: x = 3, y = 2
Q2
NCERT Standard (Variant #7) • 2 Marks2 Marks
Evaluate the exact mathematical value for Vector Algebra when parameter x = 2 and y = 5 in standard board form.
▶ Show Detailed Solution
Step 1 (Parameters):
Given: x = 2, y = 5.

Step 2 (Substitution & Solution):
Apply standard theorem for Vector Algebra: Result = (2)² + 3(5) = 4 + 15 = 19.

Final Answer: 19
Q3
CBSE Board 2024 (Variant #8) • 3 Marks3 Marks
Solve the exact board examination equation for Vector Algebra: 2x + 3y = 12 and 3x - y = 7.
▶ Show Detailed Solution
Step 1 (Elimination):
Multiply 2nd eq by 3: 9x - 3y = 21.
Add to 1st eq: 11x = 33 ⟹ x = 3.
Substitute: 3(3) - y = 7 ⟹ y = 2.

Final Answer: x = 3, y = 2
Q4
NCERT Standard (Variant #9) • 2 Marks2 Marks
Evaluate the exact mathematical value for Vector Algebra when parameter x = 2 and y = 5 in standard board form.
▶ Show Detailed Solution
Step 1 (Parameters):
Given: x = 2, y = 5.

Step 2 (Substitution & Solution):
Apply standard theorem for Vector Algebra: Result = (2)² + 3(5) = 4 + 15 = 19.

Final Answer: 19
Q5
CBSE Board 2024 (Variant #10) • 3 Marks3 Marks
Solve the exact board examination equation for Vector Algebra: 4x + 3y = 12 and 3x - y = 7.
▶ Show Detailed Solution
Step 1 (Elimination):
Multiply 2nd eq by 3: 9x - 3y = 21.
Add to 1st eq: 11x = 33 ⟹ x = 3.
Substitute: 3(3) - y = 7 ⟹ y = 2.

Final Answer: x = 3, y = 2