NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 11  15 of 2142
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Question number: 11
» Physics and Measurement » Dimensions of Physical Quantities
Question
The dimensional formula for Planck’s constant (h) is
Choices
Choice (4)  Response  

a.  [M ^{0} L ^{2} T ^{1}] 

b.  [M ^{0} L ^{2} T ^{2}] 

c.  [M L ^{2} T ^{2}] 

d.  [M L ^{2} T ^{3}] 

Question number: 12
» Kinematics » Motion in a Straight Line
Question
A particle starts moving from the position of rest under a constant ace. If it covers a distance x in t second, what distance will it travel in next t second?
Choices
Choice (4)  Response  

a.  x 

b.  2x 

c.  3x 

d.  4x 

Question number: 13
» Physics and Measurement » Errors in Measurement
Question
The period of oscillation of a simple pendulum is given by T = 2π
where l is about 100 cm and is known to have l mm accuracy. The period is about 2s. The time of 100 oscillations is measured by a stopwatch of least count 0.1s. The percentage error in g is
Choices
Choice (4)  Response  

a.  0.8% 

b.  0.1% 

c.  1% 

d.  0.2% 

Question number: 14
» Kinematics » Motion in a Straight Line
Question
A point moves with uniform acceleration and V _{1}, v _{2} and v _{3 } denote the average velocities in the three successive intervals of time t _{1}, t _{2} and t _{3}. Which of the following relations is correct?
Choices
Choice (4)  Response  

a.  (V _{1} – V _{2}) / (V _{2} – V _{3}) = (t _{1} + t _{2}) / (t _{2} + t _{3}) 

b.  (V _{1} – V _{2}) / (V _{2} – V _{3}) = (t _{1} – t _{2}) / (t _{2} + t _{3}) 

c.  (V _{1} – V _{2}) / (V _{2} – V _{3}) = (t _{1} – t _{2}) / (t _{2}  t _{3}) 

d.  None of the above 

Question number: 15
» Kinematics » Motion in a Straight Line
Question
What will be the ratio of the distances moved by a freely falling body from rest in 7^{th} and 9^{th} seconds of journey?
Choices
Choice (4)  Response  

a.  13: 17 

b.  4: 5 

c.  7: 9 

d.  16: 25 
