physics test and solutions chapter 1-1

Created by

Ghulam Nabi

Physics

Physics MTN - 56

Total Mcqs : 30 Mcqs

Passing Marks : 50%

Time Duration : 15 Minutes

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1 / 30

If A⃗=3i^+0j^vec{A} = 3hat{i} + 0hat{j}, then A⃗vec{A} lies along:

A) x-axis

B) y-axis

C) z-axis

D) none

2 / 30

If two vectors A⃗=4i^vec{A} = 4hat{i} and B⃗=3i^vec{B} = 3hat{i}, then A⃗+B⃗vec{A} + vec{B} is:

A) 7i^7hat{i}

B) 1i^1hat{i}

C) 12i^12hat{i}

D) zero

3 / 30

If A⃗=3i^+4j^vec{A} = 3hat{i} + 4hat{j}, then the direction angle θtheta is:

A) 30°

B) 45°

C) 53.13°

D) 60°

4 / 30

The components of vector A⃗=6i^+8j^vec{A} = 6hat{i} + 8hat{j} are:

A) 6 and 8

B) 8 and 6

C) 14 and 0

D) 0 and 14

5 / 30

If A⃗=7i^vec{A} = 7hat{i} and B⃗=−7i^vec{B} = -7hat{i}, then A⃗+B⃗=?vec{A} + vec{B} = ?

A) 14i^14hat{i}

B) 0

C) 7i^7hat{i}

D) −14i^-14hat{i}

6 / 30

If A⃗=3i^+4j^vec{A} = 3hat{i} + 4hat{j}, magnitude of A⃗vec{A} is:

A) 5

B) 7

C) 1

D) 12

7 / 30

The angle between two vectors in perpendicular directions is:

A) 0°

B) 90°

C) 180°

D) 60°

8 / 30

If A⃗=3i^+4j^vec{A} = 3hat{i} + 4hat{j}, then the unit vector along A⃗vec{A} is:

A) 35i^+45j^frac{3}{5}hat{i} + frac{4}{5}hat{j}

B) 3i^+4j^3hat{i} + 4hat{j}

C) 5i^+0j^5hat{i} + 0hat{j}

D) 45i^+35j^frac{4}{5}hat{i} + frac{3}{5}hat{j}

9 / 30

If A⃗=0i^+7j^vec{A} = 0hat{i} + 7hat{j} and B⃗=5i^+0j^vec{B} = 5hat{i} + 0hat{j}, the magnitude of A⃗+B⃗vec{A} + vec{B} is:

A) 12

B) 74sqrt{74}

C) 2

D) 35

10 / 30

Addition of vectors is:

A) Commutative

B) Not commutative

C) Associative

D) Both A and C

11 / 30

If A⃗=5i^+0j^vec{A} = 5hat{i} + 0hat{j}, the vector lies along:

A) y-axis

B) x-axis

C) z-axis

D) None

12 / 30

The sum of two vectors A⃗=2i^vec{A} = 2hat{i} and B⃗=2j^vec{B} = 2hat{j} is:

A) 4i^4hat{i}

B) 2i^+2j^2hat{i} + 2hat{j}

C) 4j^4hat{j}

D) 0

13 / 30

Which of these is a vector quantity?

A) Mass

B) Time

C) Velocity

D) Temperature

14 / 30

If A⃗=4i^+3j^vec{A} = 4hat{i} + 3hat{j}, then the x-component is:

A) 7

B) 3

C) 4

D) 5

15 / 30

The angle between two perpendicular vectors is:

A) 0°

B) 45°

C) 90°

D) 180°

16 / 30

The vector A⃗=0i^+7j^vec{A} = 0hat{i} + 7hat{j} is directed along:

A) x-axis

B) y-axis

C) z-axis

D) none

17 / 30

If A⃗=0i^−6j^vec{A} = 0hat{i} - 6hat{j}, it points:

A) Upwards

B) Downwards

C) Right

D) Left

18 / 30

If A⃗=6i^+8j^vec{A} = 6hat{i} + 8hat{j}, then the magnitude is:

A) 10

B) 12

C) 14

D) 4

19 / 30

The resultant vector of A⃗=3i^vec{A} = 3hat{i} and B⃗=4j^vec{B} = 4hat{j} has magnitude:

A) 7

B) 5

C) 1

D) 12

20 / 30

If A⃗=5i^vec{A} = 5hat{i} and B⃗=12j^vec{B} = 12hat{j}, magnitude of A⃗+B⃗vec{A} + vec{B} is:

A) 17

B) 13

C) 7

D) 60

21 / 30

The vector A⃗=4i^−3j^vec{A} = 4hat{i} - 3hat{j} points in:

A) First quadrant

B) Second quadrant

C) Fourth quadrant

D) Third quadrant

22 / 30

The vector A⃗=−5i^+0j^vec{A} = -5hat{i} + 0hat{j} points in the:

A) Positive x-direction

B) Negative x-direction

C) Positive y-direction

D) Negative y-direction

23 / 30

The unit vector along the y-axis is:

A) i^hat{i}

B) j^hat{j}

C) k^hat{k}

D) m^hat{m}

24 / 30

Which of these is a scalar quantity?

A) Displacement

B) Velocity

C) Speed

D) Force

25 / 30

The process of breaking a vector into two perpendicular components is called:

A) Vector addition

B) Vector resolution

C) Vector multiplication

D) Vector subtraction

26 / 30

If two vectors are opposite in direction and equal in magnitude, their sum is:

A) Equal to either vector

B) Zero

C) Twice the magnitude

D) Half the magnitude

27 / 30

The vector A⃗=0vec{A} = 0 is called:

A) Zero vector

B) Unit vector

C) Null vector

D) Both A and C

28 / 30

A vector has:

A) Only magnitude

B) Only direction

C) Magnitude and direction

D) Neither

29 / 30

The x-component of vector A⃗=10cos⁡60∘i^+10sin⁡60∘j^vec{A} = 10 cos 60^circ hat{i} + 10 sin 60^circ hat{j} is:

A) 5

B) 8.66

C) 10

D) 0

30 / 30

The y-component of vector A⃗=10cos⁡30∘i^+10sin⁡30∘j^vec{A} = 10 cos 30^circ hat{i} + 10 sin 30^circ hat{j} is:

A) 5

B) 8.66

C) 10

D) 0

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