## Chapter 25 – Vector or Cross Product Exercise Ex. 25.1

Question 1

Solution 1

Question 2

Solution 2

Question 3

Solution 3

Question 4

Solution 4

Question 5

Solution 5

Question 6

Solution 6

Question 7

Solution 7

Question 8

Solution 8

Question 9

Solution 9

Question 10

Solution 10

Question 11

Solution 11

Question 12

Solution 12

Question 13

Solution 13

Question 14

Solution 14

Question 15

Solution 15

Question 16

Solution 16

Question 17

Solution 17

Question 18

Solution 18

Question 19

Solution 19

Question 20

Solution 20

Question 21

Solution 21

Question 22

Solution 22

Question 23

Solution 23

Question 24

Solution 24

Question 25

Solution 25

Question 26

Solution 26

Question 27

Solution 27

Question 28

Solution 28

Question 29

Solution 29

Question 30

Solution 30

Question 31

Solution 31

Question 32

Solution 32

Question 33

Solution 33

Question 34

Solution 34

Question 35

Solution 35

Question 36

Solution 36

Question 37

Solution 37

Question 38

Solution 38

Question 39

Solution 39

Question 40

Solution 40

Question 41

Solution 41

Question 42

Solution 42

Question 43

Using Vectors, find the area of the triangle with vertices: (i) A (1, 1, 2), B (2, 3, 5) and C (1, 5, 5) (ii) A (1, 2, 3), B(2, -1, 4) and C (4, 5, -1).

Solution 43

Question 44

Solution 44

## Chapter 25 – Vector or Cross Product Exercise Ex. 25VSAQ

Question 1

Solution 1

Question 2

Solution 2

Question 3

Solution 3

Question 4

Solution 4

Question 5

Solution 5

Question 6

Solution 6

Question 7

Solution 7

Question 8

Solution 8

Question 9

Solution 9

Question 10

Solution 10

Question 11

Solution 11

Question 12

Solution 12

Question 13

Solution 13

Question 14

Solution 14

Question 15

Solution 15

Question 16

Solution 16

Question 17

Solution 17

Question 18

Solution 18

Question 19

Solution 19

Question 20

Solution 20

Question 21

Solution 21

Question 22

Solution 22

Question 23

Solution 23

Question 24

Solution 24

Question 25

Solution 25

Question 26

Solution 26

Question 27

Solution 27

Question 28

Solution 28

## Chapter 25 – Vector or Cross Product Exercise MCQ

Question 1

Solution 1

Correct option: (b)

Question 2

Solution 2

Correct option: (a)

Question 3

Solution 3

Correct option: (a)

Question 4

Solution 4

Correct option: (c)

Question 5

Solution 5

Correct option: (b)

Question 6

- 300
- 325
- 275
- 225

Solution 6

Correct option: (a)

Question 7

Solution 7

Correct option: (a)

Question 8

Solution 8

NOTE: Answer not matching with back answer.

Question 9

Solution 9

Correct option: (b)

Question 10

Solution 10

Correct option: (b)

Using property of dot and cross product.

Question 11

Solution 11

Correct option: (b)

Question 12

Solution 12

Correct option: (c)

Question 13

Solution 13

Correct option: (b)

Question 14

Solution 14

Correct option: (c)

Question 15

Solution 15

Correct option: (b)