NEET Physics Chapter Wise Mock Test – Scalar and Vector

NEET Physics Chapter Wise Mock Test – Scalar and Vector

Question 1:
If two vectors are equal in magnitude and their resultant is also equal in magnitude to one of them, then the angle between the two vectors is
(a) 60°
(b) 120°
(c) 90°
(d) 0°

Question 2:
If A = 3i + 4j and B = 7i + 24j the vector having the same magnitude as B and parallel to A is
(a) 5 i + 20 j
(b) 15i + 10j
(c) 201 + 15 j
(d) 15i + 20j

Question 3:
The sum of the magnitudes of two forces acting at a point is 16N. The resultant of these forces is perpendicular to the smaller forces and has a magnitude of 8 N. If the smaller forces of magnitude x, then the value of x is
(a) 2 N
(b) 4 N
(c) 6 N
(d) 7 N

Question 4:

Question 5:
If two vectors 2 i + 3j + k and -4i – 6j – lambdak are parallel to each other, then value of λ is
(a) zero
(b) -2
(c) 3
(d) 4

Question 6:
Which of the following statements is true?
(a) A scalar quantity is the one that is conserved in a process
(b) A scalar quantity is one that can never be negative values
(c) A scalar quantity is the one that does not vary from one point to another in space
(d) A scalar quantity has the same value for observers with different orientations of the axes

Question 7:

Question 8:
The value of n so that vectors 2i+3j-2k, 5i+ n j + k and – i+2 j+3 k may be coplanar, will be
(a) 18
(b) 28
(c) 9
(d) 36

Question 9:

Question 10:
A 120 m long train is moving in a direction with speed 20 m/s. A train B moving with 30 m/s in the opposite direction and 130 m long crosses the first train in a time
(a) 6 s
(b) 36 s
(c) 38 s
(d) None of these

Question 11:
A police jeep is chasing a culprit going on a motorbike. The motorbike crosses a turning at a speed of 72 km/h. The jeep follows it at a speed of 90 km/h, crossing the turning 10 s later than the bike. Assuming that they travel at constant speeds, how far from the turning will the jeep catch up with the bike? (in km)
(a) 1
(b) 2
(c) 3
(d) 4

Question 12:
A boat takes 2 h to travel 8 km and back in still water. If the velocity of water 4 km/h, the time taken for going up stream 8 km and coming back is
(a) 2 h
(b) 2 h 40 min .
(c) 1 h 20 min
(d) Cannot be estimated with the information given

Question 13:

Question 14:
A boat is sent across a river with a velocity of 8 km/h. If the resultant velocity of boat is 10 km/h, then velocity of river is
(a) 10 km/h
(b) 8 km/h
(c) 6 km/h
(d) 4 km/h

Question 15:
A piece of marble is projected from the earth’s surface with velocity of 50 m/s. 2 s later, it just clears a wall 5 m high. What is the angle of projection?
(a) 45°
(b) 30°
(c) 60°
(d) None of these

Question 16:

Question 17:
An aeroplane flies 400 m due to North and then 300 m due to South and then flies 1200 m upwards, the net displacement is
(a) greater than 1200 m
(b) less than 1200 m
(c) 1400 m
(d) 1500 m

Question 18:

Question 19:

Question 20:
A projectile is thrown in the upward direction making an angle of 60° with the horizontal direction with a velocity of 147 m/s. Then, the time after which its inclination with the horizontal is 45°, is
(a) 15 s
(b) 10.98 s
(c) 5.49 s
(d) 2.745 s

Question 21:

Question 22:
A projectile is fired from the surface of the earth with a velocity of 5 m/s and angle 0 with the horizontal. Another projectile fired from another planet with a velocity of 3 m/s at the same angle follows a trajectory which is identical with the trajectory of the projectile fired from the earth. The value of the acceleration due to gravity on the planet is (in m/s²) (given, g = 9.8 m/s²)
(a) 3.5
(b) 5.9
(c) 16.3
(d) 110.8

Question 23:

Question 24:

Question 25:

Question 26:
If A • B = A x B, then the angle between A and B is
(a) 45°
(b) 30°
(c) 60°
(d) 90°

Question 27:

Question 28:
A rocket is fired upward from the earth surface such that it creates an acceleration of 19.6 m/s². If after 5 s, its engine is switched off, the maximum height of the rocket from earth’s surface would be
(a) 245 m
(b) 490 m
(b) 980 m
(d) 735 m

Question 29:
A missile is fired for maximum range with an initial velocity of 20 m/s. If g = 10 m/s2, the range of missile is
(a) 50 m
(b) 60 m
(c) 20 m
(d) 40 m

Question 30:
If a vector 2i + 3 j+ 8k is perpendicular to the vector 4j – 4i + ak, then value of a is
(a) -1
(b) 1/2
(c) -1/2
(d) 1

Question 31:
If A = 4i + 4j + 4k and B = 3i + j + 4k, then angle between vectors A and B is
(a) 180°
(b) 90°
(c) 45°
(d) 0°

Question 32:

Question 33:

Answers:

Hints And Solutions:

PhysicsChemistryBiology