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WorksheetsVECTORS -3
Total questions: 10
Worksheet time: 5mins
A force of 50 N acts on a body and displaces it through a distance of 10 meters in a direction making an angle of 600 with the force. What is the work done by the force?
100 J
150 J
200 J
250 J
Walking off a man is an example of ____________
Resolution of forces
Addition of vectors
Subtraction of vectors
Multiplication of vectors
Assertion: A.B =B.A
Reason: Dot product of two vectors is commutative.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If the assertion and reason both are false.
If assertion is false but reason is true.
Assertion: Multiplying any vector by a scalar is a meaningful operation.
Reason: In uniform motion speed remains constant.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If the assertion and reason both are false.
The angle between the vector 2i^ + 3j^ + k^ and 2i^ – j^ – k^ is
π/2
π/4
π/3
0
Find the value of λ such that the vectors a⃗ = 2i^ + λj^ + k^ and b⃗ = i^ + 2j^ + 3k^ are perpendicular.
0
1
3/2
–5/2
If a = 2i – 5j + k and b = 4i + 2j + k then a .b =
0
-1
1
2
If a .b = 0, then
a ⊥ b
a || b
a + b = 0
a – b = 0
The scalar product of 5i^ + j^ – 3k^ and 3i^ – 4j^ + 7k^ is:
10
-10
15
-15
Assertion: The scalar product of two vectors can be zero.
Reason: If two vectors are perpendicular to each other, their scalar product will be zero.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If the assertion and reason both are false.
