NEET Physics: Questions 201  206 of 2098
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Passage
Velocity at a general point P (x, y) for a horizontal projectile motion is given by
V = =
α is angle made by v with horizontal in clockwise direction Trajectory equation for a horizontal projectile motion is given by x = v _{x} t = ut
y = ( ) gt ^{2 }
Eliminating t, We get y =
Question number: 201 (2 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
Question
An aeroplane is in a level flying at an speed of 144 km/hr at an altitude of 1000 m. How far horizontally from a given target should a bomb be released from it to hit the target?
Choices
Choice (4)  Response  

a.  471.34 m 

b.  671.43 m 

c.  371.34 m 

d.  571.43 m 

Question number: 202 (3 of 3 Based on Passage) Show Passage
» Kinematics » Average Speed and Instantaneous Velocity
Question
An aeroplane is flying horizontally with a velocity of 720 km/h at an altitude of 490 m. When it is just vertically above the target a bomb is dropped from it. How far horizontally it missed the target?
Choices
Choice (4)  Response  

a.  2000 m 

b.  200 m 

c.  1000 m 

d.  100 m 

Question number: 203
» Kinematics » Uniform Circular Motion
Question
A particle completes 1.5 revolutions in a circular path of radius 2 cm. The angular displacement of the particle will be  (in radian)
Choices
Choice (4)  Response  

a.  2 π 

b.  6 π 

c.  π 

d.  3 π 

Question number: 204
» Kinematics » Motion in a Plane
Question
When the angle of elevation of a gun are 60° and 30° respectively, the height it shoots are h1 and h2 respectively, hj/h2 equal to –
Choices
Choice (4)  Response  

a.  1/3 

b.  2/1 

c.  1/2 

d.  3/1 

Question number: 205
» Kinematics » Uniformly Accelerated Motion
Question
The magnitude of the linear acceleration of the particle moving in a circle of radius 10 cm with uniform speed completing the circle in 4 s, will be –
Choices
Choice (4)  Response  

a.  2.5 π ^{2} cm/s ^{2} 

b.  2.5π cm/s ^{2} 

c.  5 π cm/s ^{2} 

d. 
5 π ^{2} cm/s ^{2} 

Question number: 206
» Communication System » Propagation of Electromagnetic Waves in the Atmosphere
Question
The vernier constant of two vernier calipers A and B are 0.01 cm and 0.01 mm respectively. Which one can measure the length of an object more accurately?
Choices
Choice (4)  Response  

a.  Accuracy in measurement does not depend on vernier constant 

b.  Vernier B 

c.  Vernier A 

d.  All of the above 
