NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 109  114 of 2184
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Passage
Three of the fundamental constants of physics are the universal gravitational constant, G = 6.7 x 10 ^{11 } m ^{3} kg ^{1} s ^{2}, the speed of light, c = 3.0 x 10 ^{8} m/s, and Planck’s constant,
h = 6.6 x 10 ^{34} kg m ^{2} s ^{1}.
Question number: 109 (2 of 2 Based on Passage) Show Passage
» Physics and Measurement » Dimensions of Physical Quantities
Question
Find the value of Planck time in seconds
The universal gravitational constant, G = 6.7 x 10 ^{11} m ^{3} kg ^{1} s ^{2}, the speed of light, c = 3.0 x 10 ^{8} m/s, and Planck’s constant, h = 6.6 x 10 ^{34} kg m ^{2} s ^{1}.
Choices
Choice (4)  Response  

a.  1.3 10 ^{ 43} s 

b.  1.3 10 ^{33} s 

c.  2.3 10 ^{13} s 

d.  Question does not provide sufficient data or is vague 

Passage
When an airplane flies, its total velocity with respect to the ground is v _{total} = v _{plane} + v _{wind’} where v _{plane} denotes the plane’s velocity through motionless air,
And v _{wind} denotes the wind’s velocity. Crucially, all the quantities in this equation are vectors. The magnitude of a velocity vector is often called the “speed. ”
Consider an airplane whose speed through motionless air is 100 meters per second (m/s). To reach its destination, the plane must fly east.
The “heading” of a plane is in the direction in which the nose of the plane points. So, it is the direction in which the engines propel the plane.
Question number: 110 (1 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
Question
Let denote the answer of above question. The plane has what speed with respect to the ground?
Choices
Choice (4)  Response  

a.  (100 m/s) 

b. 
 
c. 
 
d.  (100 m/s) 

Question number: 111 (2 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
Question
The pilot maintains an eastward heading while a 20 m/s wind blows northward. The plane’s velocity is deflected from due east by what angle?
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 
 
d.  All of the above 

Question number: 112 (3 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
Question
If the plane has an eastward heading, and a 20 m/s wind blows towards the southwest, then the plane’s speed is 
Choices
Choice (4)  Response  

a.  100 m/s 

b.  more than 100 m/s 

c.  more than 80 m/s but less than 100 m/s 

d.  80 m/s 

Question number: 113
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
Two forces Fl = 5i + l0j  20k and F2 = 10i  5j  l5k act on a single point. The angle between Fj and F2 is nearly
Choices
Choice (4)  Response  

a.  90° 

b.  60° 

c.  30° 

d.  45° 

Passage
A = 2i + j + k and B = i + j + k are two vectors.
Question number: 114 (1 of 3 Based on Passage) Show Passage
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
The unit vector parallel to A is
Choices
Choice (4)  Response  

a. 
 
b. 
 
c. 


d. 
