NEET Physics: Questions 64  68 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: 64
» Physics and Measurement » Dimensions of Physical Quantities
Question
If the time period (T) of vibration of a liquid drop depends on surface tension (S), radius (r) of the drop and density (ρ) of the liquid, then the expression of T is
Choices
Choice (4)  Response  

a.  T = k


b.  T = k


c.  T = k


d.  None of the above 

Question number: 65
» Kinematics » Motion in a Straight Line
Question
A particle moves along xaxis as x = 4 (t  3) + a (t  4) ^{2}
Which of the following is true?
Choices
Choice (4)  Response  

a.  The initial velocity of particle is 4 

b.  The particle is at origin at t = 0 

c.  The acceleration of particle is 2a 

d.  All of the above 

Question number: 66
» Physics and Measurement » Errors in Measurement
Question
Error in the measurement of radius of a circle is 1%. The error in the calculated value of its area is
Choices
Choice (4)  Response  

a.  3% 

b.  2% 

c.  7% 

d.  1% 

Question number: 67
» Kinematics » Motion in a Straight Line
Question
a particle moving in a straight line covers half the distance with speed of 3 m/s. The other half of the distance is covered in two equal time intervals with speed of 4.5 m/s and 7.5 m/s respectively. The average speed of the particle during this motion is
Choices
Choice (4)  Response  

a.  5.0 m/s 

b.  5.5 m/s 

c.  4.8 m/s 

d.  4.0 m/s 

Question number: 68
» Physics and Measurement » Errors in Measurement
Question
A physical quantity A is related to four observable a, b, c and d as follows, A =
the percentage errors of measurement in a, b, c and d are 1%, 3%, 2 % and 2 % respectively. What is the percentage error in the quantity A?
Choices
Choice (4)  Response  

a.  14% 

b.  7% 

c.  5% 

d.  12% 
