Kinematics-Scalars and Vectors (NEET Physics): Questions 12 - 15 of 15

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Question number: 12

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

A boy walks uniformly along the sides of a rectangular park of size 400 m x 300 m, starting from one corner to the other corner diagonally opposite. Which of the following statements is correct?

(1) He has travelled a distance of 700 m

(2) His displacement is 500 m

(3) His velocity is not uniform throughout the walk

(4) His displacement is 700 m

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1, 2 and 3 are correct

c.

2 and 4 are correct

d.

1 and 2 are correct

Question number: 13

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

the vector P = ai + aj + 3k and Q = ai - 2j - k are perpendicular to each other. The positive value of a is

Choices

Choice (4) Response

a.

4

b.

9

c.

3

d.

13

Question number: 14

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

A particle moves from position 3i + 2j-6k to 14i + 13j + 9k due to a uniform force of (4i + j + 3k) N. If the displacement in metres then work done will be

Choices

Choice (4) Response

a.

250 J

b.

300 J

c.

100 J

d.

200 J

Question number: 15

» Kinematics » Scalars and Vectors » Scalar and Vector Products

MCQ▾

Question

If|AxB|=| A. B| , then angle between A and S will be

Choices

Choice (4) Response

a.

30

b.

60°

c.

45°

d.

None of the above

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