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11th West Bengal Board
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Two vectors A→ and B→ are perpendicular when:

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Important Questions on Scalars and Vectors

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11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 4 - Scalars and Vectors>EXERCISE>Q 4
The scalar product of two vectors A and B satisfies
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11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 4 - Scalars and Vectors>EXERCISE>Q 5
The sum and difference of two vectors have the same magnitude. The angle between them is:
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11th West Bengal Board
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A Text Book of PHYSICS PART I : CLASS 11>Chapter 4 - Scalars and Vectors>EXERCISE>Q 6
Consider a vector F=4i-3j. Another vector that is perpendicular to F→ is
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11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 4 - Scalars and Vectors>EXERCISE>Q 7
The angle between the vectors i^+j^ and j^+k^ is,
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11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 4 - Scalars and Vectors>EXERCISE>Q 8
The resultant of two vectors that are at right angles to each other is 80 units. If the resultant is inclined at an angle 60° with one vector, then the magnitudes of the vectors are:
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11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 4 - Scalars and Vectors>EXERCISE>Q 9
In still water, the velocity of a boat is 5 km h-1. The boat crosses a river 1 km wide directly in 15 minutes. The velocity of the current is:
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11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 4 - Scalars and Vectors>EXERCISE>Q 10
When the angle between the vector a→ and b→ is θ, their resultant is 5a2+b2. When the angle is 90°-θ the resultant is 3a2+b2. In this condition tan θ is
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11th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART I : CLASS 11>Chapter 4 - Scalars and Vectors>EXERCISE>Q 11
The resultant of two vectors A→ and B→ makes an angle α with A→ and β with B→. Here