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Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion

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30 Questions MCQ Test JEE Main & Advanced Mock Test Series | Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion

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Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 1

The length, breadth and thickness of a rectangular sheet of metal are 4.234 m, 1.005 m and 2.01cm. The volume of the sheet to correct significant figures is:

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 2

When 97.52 is divided by 2.54, the correct result is

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 3

The number of significant figure in V is:

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 4
12 coplanar forces (all of equal magnitude)maintain a body in equilibrium, then the angle between any two adjacent forces is:
Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 5
What is the maximum number of rectangular components into which a vector can be split in space
Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 6

Figure shows three vecotrs where R is the midpoint of PQ. Then which of the following
relation is correct ?

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 7

If vectors and are inclined to each other at angle then is

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 8
If a and b are two unit vectors inclined at an angle to each other then
Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 9

If a c=0and |a|=1 , ||= 1 and |c|= then angle between a and b is

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 10
The angles which one the vector makes with the coordinate axes are
Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 11
Three vectors satisfy the relation and then is parallel to
Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 12

a-t graph for a particle moving in a straight line is as
shown in figure. Change in velocity of the particle from t = 0 to t = 6s is

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 13

An insect crawls a distance of 4m along north in 10seconds and then a distance of 3 m along east in 5seconds. The average velocity of the insect is

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 14

Let and denote the velocity and acceleration respectively of a particle in one dimensional motion

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 15
The displacement time graph of a moving particle is shown in figure. The instantaneous velocity of the particle is negative at the point
Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 16

A stone is projected with a velocity at an angle of to the horizontal. The average velocity of stone during its motion from starting point to its maximum height is (Take

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 17
The velocity at the maximum height of a projectile is half of its initial velocity of projection (u). Its range on horizontal plane is
Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 18
The equation of motion of a projectile is Given that g = what is the range of the projectile
Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 19

Which one of the following is constant in a projectile motion ?

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 20

At the uppermost point of a projectile its velocity and acceleration are at an angle of

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 21

The maximum range of a gun on horizontal terrain is1.0 km. If g =10 what must be the muzzle velocity of the shell

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 22

Block B moves to the right with a constant velocity The velocity of body A relative to B is

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 23

A block of mass m is at rest on an inclined surface having a coefficient of friction as shown in the figure. The horizontal acceleration which shouldbe given to the inclined plane, that the force of friction between the block and the plane become zero, is

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 24

A block of weight 5N is pushed against a vertical wall by a force 12 N. The coefficient of friction between the wall and block is 0.6. The magnitude of the force exerted by the wall on the block is

Detailed Solution for Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 24

Due to normal reaction a force of 12N acts towards left.

and also as block is at rest frictional force must balance the weight. therefore frictional force is 5N in upward direction.

hence the two forces are perpendicular

so resultant = √(12*12 + 5*5 ) = 13N

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 25

When a force F acts on a body of a mass m, the acceleration produced in the body is a. If three equal forces F1 = F2 = F3 = F act on the same body as shown in figure. The acceleration produced is

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 26

A force vector applied on a mass is represented by and accelerates with a What is the mass of the body

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 27

A monkey of mass 20 kg is holding a vertical rope.The rope will not break when a mass of 25 kg is suspended from it but will break if the mass exceeds 25 kg. What is the maximum acceleration with which the monkey can climb up along the rope ?(g=10

Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 28
Direction : Read the following question and choose
A. If both Assetion and Reason are true and the Reason is correct explanation of the Assertion
B. If both Assertion and Reason are true, but Reason is not correct explanation of the Assertion
C. If Assertion is true, but the Reason is false
D. If Assertion is false, but the Reason is true
Assertion : nm is not same as mN.
Reason : 1 nm =m and 1m N =
Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 29
Direction : Read the following question and choose
A. If both Assetion and Reason are true and the Reason is correct explanation of the Assertion
B. If both Assertion and Reason are true, but Reason is not correct explanation of the Assertion
C. If Assertion is true, but the Reason is false
D. If Assertion is false, but the Reason is true
Assertion : Method of dimensions cannot be used for deriving formulae containing trigonometrical ratios
Reason : This is because trigonometrical ratios have no dimensions
Physics Test 12 - Unit, Dimension, Measurement, Kinematics And Laws Of Motion - Question 30
Direction : Read the following question and choose
A. If both Assetion and Reason are true and the Reason is correct explanation of the Assertion
B. If both Assertion and Reason are true, but Reason is not correct explanation of the Assertion
C. If Assertion is true, but the Reason is false
D. If Assertion is false, but the Reason is true
Assertion : The dimensional formula of surface tension is same as that for tension
Reason : Tension is force and surface tension is force per unit length

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