Kinematics-Scalars and Vectors (NEET Physics): Questions 1 - 7 of 15

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Question number: 1

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

Two forces Fl = 5i + l0j - 20k and F2 = 10i - 5j - l5k act on a single point. The angle between Fj and F2 is nearly

Choices

Choice (4) Response

a.

30°

b.

90°

c.

45°

d.

60°

Passage

A = 2i + j + k and B = i + j + k are two vectors.

Question number: 2 (1 of 3 Based on Passage) Show Passage

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

the unit vector perpendicular to A is

Choices

Choice (4) Response

a.

j^+k^2

b.

i^k^2

c.

i^+k^2

d.

j^k^2

Question number: 3 (2 of 3 Based on Passage) Show Passage

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

The unit vector parallel to A is

Choices

Choice (4) Response

a.

2i^+j^+k^6

b.

2i^+j^2k^6

c.

2i^j^+3k^2

d.

2i^j^k^5

Question number: 4 (3 of 3 Based on Passage) Show Passage

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

the unit vector perpendicular to B is

Choices

Choice (4) Response

a.

i^+k^3

b.

i^k^3

c.

j^k^3

d.

j^+k^2

Question number: 5

» Kinematics » Scalars and Vectors » Vector Addition and Subtraction

MCQ▾

Question

A boat is moving with a velocity 3i + 4j with respect to ground. The water in the river is moving with a velocity – 3i – 4j with respect to ground. The relative velocity of the boat with respect to water is

Choices

Choice (4) Response

a.

-6 i^ - 8 j^

b.

6 i^ + 8 j^

c.

8

j^

d.

5 - 2i^

Question number: 6

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

The three vectors A = 3i-2j + k, B = i-3j + 5k and C = 2i + j-4k form

Choices

Choice (4) Response

a.

isosceles triangle

b.

a right angled triangle

c.

no triangle

d.

an equilateral triangle

Question number: 7

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

If for two vectors A and B, A x B = 0, which of the following is not correct?

(1) They are perpendicular to each other

(2) They act at an angle of 60°

(3) They act at an angle of 30°

(4) They are parallel to each other

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 3 are correct

c.

1 and 2 are correct

d.

1, 2 and 3 are correct

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