NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 11  15 of 2184
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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 ^{2}] 

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

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 acceleration. If it covers a distance x in t second, what distance will it travel in next t second?
Choices
Choice (4)  Response  

a.  3x 

b.  2x 

c.  4x 

d.  x 

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.  0.2% 

b.  0.1% 

c.  0.8% 

d.  1% 

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.  All 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.  7: 9 

b.  16: 25 

c.  4: 5 

d.  13: 17 
