Physics and Measurement (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 53  57 of 62
Visit this page to view all the question topics
To view these problems with solutions proceed here and click "Subscribe Now".
Question number: 53
» Physics and Measurement » Dimensions of Physical Quantities
Question
What are the dimensions of permeability (µ _{0}) of vacuum?
Choices
Choice (4)  Response  

a.  [M L T ^{2} I ^{2}] 

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

c.  [M L ^{1} T ^{2} I ^{2}] 

d.  [M L ^{1} T ^{2} I ^{2}] 

To view these problems with solutions proceed here and click "Subscribe Now".
Question number: 54
» Physics and Measurement » Dimensions of Physical Quantities
Question
In S = a + bt + ct ^{2}, S is measured in meters and t in seconds. The unit of c is
Choices
Choice (4)  Response  

a.  ms ^{2} 

b.  m 

c.  ms ^{1} 

d.  None of the above 

To view these problems with solutions proceed here and click "Subscribe Now".
Passage
Three of the fundamental constants of physics are the universal gravitational constant, G = 6.7 x 10 ^{11 } m ^{3} kg ^{1} s ^{2}, the speed of light, c = 3.0 x 10 ^{8} m/s, and Planck’s constant,
h = 6.6 x 10 ^{34} kg m ^{2} s ^{1}.
Question number: 55 (1 of 2 Based on Passage) Show Passage
» Physics and Measurement » Dimensions of Physical Quantities
Question
Find the value of Planck time in seconds
The universal gravitational constant, G = 6.7 x 10 ^{11} m ^{3} kg ^{1} s ^{2}, the speed of light, c = 3.0 x 10 ^{8} m/s, and Planck’s constant, h = 6.6 x 10 ^{34} kg m ^{2} s ^{1}.
Choices
Choice (4)  Response  

a.  2.3 10 ^{13} s 

b.  1.3 10 ^{33} s 

c.  1.3 10 ^{ 43} s 

d.  None of the above 

To view these problems with solutions proceed here and click "Subscribe Now".
Question number: 56 (2 of 2 Based on Passage) Show Passage
» Physics and Measurement » Dimensions of Physical Quantities
Question
The energy of a photon is given by E = If λ = 4 x 10  7 m, the energy of photon is
The universal gravitational constant, G = 6.7 x 10 ^{11} m ^{3} kg ^{1} s ^{2}, the speed of light, c = 3.0 x 10 ^{8} m/s, and Planck’s constant, h = 6.6 x 10 ^{34} kg m ^{2} s ^{1}.
Choices
Choice (4)  Response  

a.  4.5 eV 

b.  2.10eV 

c.  3.0 eV 

d.  3.95 eV 

To view these problems with solutions proceed here and click "Subscribe Now".
Question number: 57
» Physics and Measurement » Dimensional Analysis and Its Applications
Question
In an experiment the angles are required to be measured using an instrument, 29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale. If the smallest division of the main scale is half a degree (= 0.5°), then the least count of the instrument is:
Choices
Choice (4)  Response  

a.  half minute 

b.  one minute 

c.  one degree 

d.  half degree 

To view these problems with solutions proceed here and click "Subscribe Now".