Kinematics-Scalars and Vectors (NEET Physics): Questions 8 - 11 of 15

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Question number: 8

» Kinematics » Scalars and Vectors » Scalar and Vector Products

Assertion-Reason▾

Assertion (Ꭺ)

The sum of two vectors can be zero.

Reason (Ꭱ)

Two vectors cancel each other, when they are equal and opposite.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 9

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

What is the value of linear velocity, if co = 3i -4j + k and r = 5i - 6j + 6k

Choices

Choice (4) Response

a.

-18 Equation - 13 Equation + 2 Equation

b.

6 Equation - 2 Equation + 8 Equation

c.

4 Equation - 13 Equation + 6 Equation

d.

6 Equation - 2 Equation + 3 Equation

Question number: 10

» Kinematics » Scalars and Vectors » Scalar and Vector Products

Assertion-Reason▾

Assertion (Ꭺ)

If|A + B|=| A-B| , then angle between A and B is 90°

Reason (Ꭱ)

A + B = B + A

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 11

» 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 does not form

(1) an equilateral triangle

(2) isosceles triangle

(3) a right angled triangle

(4) no triangle

Choices

Choice (4) Response

a.

1 and 2 are correct

b.

2 and 4 are correct

c.

1, 2 and 3 are correct

d.

1 and 3 are correct

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