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Measurement and Physical Quantities (NEET Physics)

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NEET MCQs on Physical World and Measurement

Question 1
Which pair of the following forces will never give resultant force of 2 N
A
1 N and 4 N
B
1 N and 3 N
C
1 N and 1 N
D
2 N and 2 N
Question 2
Surface area is

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A
Vector
B
Neither scalar nor vector
C
Scalar
D
Both scalar and vector
Question 3
A man standing on a road hold his umbrella at 30° with the vertical to keep the rain away. He throws the umbrella and starts running at 10 km/hr. He finds that raindrops are hitting his head vertically, the speed of raindrops with respect to the road will be
A
10 km/hr
B
40 km/hr
C
30 km/hr
D
20 km/hr
Question 4
Two forces of 12 N and 8 N act upon a body. The resultant force on the body has maximum value of
A
4 N
B
0 N
C
20 N
D
8 N
Question 5
A body moves due East with velocity 20 km/hour and then due North with velocity 15 km/hour. The resultant velocity
A
25 km/hour
B
5 km/hour
C
15 km/hour
D
20 km/hour
Question 6
The resultant of the two vectors having magnitude 2 and 3 is 1. What is their cross product
A
1
B
3
C
6
D
0
Question 7
A hall has the dimensions 10 m x 12m x 14 m A fly starting at one corner ends up at a diametrically opposite corner. What is the magnitude of its displacement
A
36 m
B
20 m
C
17 m
D
26 m
Question 8
Dot product of two mutual perpendicular vector is
A
2
B
0
C
None of these
D
1
Question 9
A
Along east
B
Vertically downward
C
Zero
D
Along west
Question 10
The resultant of two vectors A and B is perpendicular to the vector A and its magnitude is equal to half the magnitude of vector B. The angle between A and B is
A
150°
B
120°
C
135°
D
None of these
Question 11
The maximum and minimum magnitude of the resultant of two given vectors are 17 units and 7 unit respectively. If these two vectors are at right angles to each other, the magnitude of their resultant is
A
18
B
14
C
16
D
13
Question 12
Following sets of three forces act on a body. Whose resultant cannot be zero
A
10, 20, 23
B
10, 10, 10
C
10, 10, 20
D
10, 20, 40
Question 13
The vector

are perpendicular to each other. The positive value of a is

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A
4
B
13
C
3
D
9
Question 14
Angular momentum is
A
An axial vector
B
None of these
C
A polar vector
D
A scalar
Question 15
Two forces, each of magnitude F have a resultant of the same magnitude F. The angle between the two forces is
A
60°
B
45°
C
150°
D
120°
Question 16
A particle has displacement of 12 m towards east and 5 m towards north then 6 m vertically upward. The sum of these displacements is

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A
12 m
B
10.04 m
C
None of these
D
14.31 m
Question 17
Maximum and minimum magnitudes  of the resultant of two vectors of magnitudes P and Q are in the ratio 3 : 1 Which of the following relations is true

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A
P = Q
B
P = 2Q
C
None of these
D
PQ = 1
Question 18
Which of the following is a scalar quantity?
A
Electric field
B
Displacement
C
Acceleration
D
Work
Question 19
If for two vectors the vectors
A
Act at an angle of 30°
B
Are parallel to each other
C
Are perpendicular to each other
D
Act at an angle of 60°
Question 20
How many minimum number of non-zero vectors in different planes can be added to give zero resultant
A
2
B
5
C
3
D
4
There are 20 questions to complete.
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