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  • Need clarity, kindly explain! Match List - I (Event) with List - II (Order of the time interval for happening of the event) and select the correct option from the options given below the lists.

Match List - I (Event) with List - II (Order of the time interval for happening of the event) and select the correct option from the options given below the lists.

  • Option 1)

    (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

  • Option 2)

      (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

  • Option 3)

      (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)

  • Option 4)

     (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)

 

Answers (1)

best_answer

As we have learned

Time period of Rotation of earth -

T=\frac{2\pi }{\omega }=2\pi \sqrt{\frac{R}{g}}

R\rightarrow Radius of earth

T\rightarrow Time period of  rotation of earth
 

- wherein

R=6400\times 10^{3}m

g=10\: m/s^{2}

T=1.40\; hr

\omega =\frac{1}{800}\frac{rad}{sec}

 

 Rotation period of earth = 24 h v 

                                         = 86, 400 sec 

                                         \approx 10^5 sec

Revolution pweriod of earth 

\approx 365days = 86400 \times 365 = 3.1 \times 1 0^7 sec

Period of light wave = \lambda / C

= \frac{ 5000\times 10 ^{-10 }}{3 \times 10 ^8}= 1.7 \times 10 ^{-15}sec

 

 

 

 

 


Option 1)

(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

Option 2)

  (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

Option 3)

  (a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)

Option 4)

 (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)

Posted by

SudhirSol

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