NEET Physics: Questions 161  164 of 2098
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 550.00 or
Question number: 161
» Kinematics » Average Speed and Instantaneous Velocity
Question
A projectile can have the same range R for two angles of projections. If t1 and t2 be the times of flight in two cases, then choose the incorrect relations –
Choices
Choice (4)  Response  

a.  t _{1} t _{2} 

b.  t _{1} t _{2} t _{1} t _{2} 

c.  t _{1} t _{2} 

d.  t _{1} t _{2} 

Question number: 162
» Kinematics » Average Speed and Instantaneous Velocity
Question
The angular displacement of a particle is given by where co0 and a are constant and ∞0 = 1 rad/sec, α = 1.5 rad/sec2. The angular velocity at time, t = 2 sec will be (in rad/sec) –
Choices
Choice (4)  Response  

a.  5 

b.  1 

c.  3 

d.  4 

Question number: 163
» Kinematics » Average Speed and Instantaneous Velocity
Assertion (Ꭺ)
A man projects a stone with speed u at some angle. He again projects a stone with same speed such that time of flight now is different. The horizontal ranges in both the cases may be same. (Neglect air friction)
Reason (Ꭱ)
The horizontal range is same for two projectiles projected with same speed if one is projected at an angle 6 with the horizontal and other is projected at
an angle (90°  6) with the horizontal. (Neglect air friction)
Choices
Choice (4)  Response  

a.  Ꭺ is true but Ꭱ is false 

b.  Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ 

c.  Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ 

d.  Both Ꭺ and Ꭱ are false 

Question number: 164
» Kinematics » Average Speed and Instantaneous Velocity
Question
A ball ‘A’ is projected from origin with an initial velocity v0 = 700 cm/sec in a direction 37° above the horizontal as shown in fig Another ball ‘B’ 300 cm from origin on a line 37° above the horizontal is released from rest at the instant A starts. How far will B have fallen when it is hit by A?
Choices
Choice (4)  Response  

a.  900 cm 

b.  0.9 cm 

c.  90 cm 

d.  9 cm 
