
vectors
Quiz
•
Physics
•
11th Grade
•
Easy
NAMRATA A
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The value of (i-j).(2i-j+k) is:
-3
+3
0
2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the dot product of two vectors is 0 then the angle between them (in degrees) will be:
0
180
60
90
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The magnitude of vector i-j-k is
-1
+1
none of these
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The angle betweeen the vectors (i+j) and (-i+j) (in degrees) is:
0
45
90
180
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The value of x, so that xi+0.4j+0.8k is a unit vector is:
1
-0.2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A vector when added to 2i-j+k and -i-j+k gives null vector. The vector is:
i-2j+2k
-i+2j-2k
2i-2j+2k
2i-j+2k
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Choose the incorrect option:
. = .
i.j=0
k.k=0
j.j=1
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