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If you lok out of the window of a fast m...

If you lok out of the window of a fast moving train the nearby trees, houses etc,. Seem to move rapidly in a direction opposite to the train's motion, but the distant objects seem to be stationary. Why?

A

Both (A) and (R ) are true and (R ) is the correct explanation of (A)

B

Both (A) and (R ) are true and (R ) is not the correct explanation of (A)

C

(A) is true but (R ) is false

D

(A) is false but (r) is true

Text Solution

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The correct Answer is:
A
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STATEMENT -1 : For an observer looking out through the window of a fast moving train , the nearby objects appear to move in the opposite direction to the train , while the distant objects appear to be stationary . STATEMENT - 2 : If the observer and the object are moving at velocities vec v_(1) and vec v_(2) respecttively with refrence to a laboratory frame , the velocity of the object with respect to a laboratory frame , the velocity of the object with respect to the observer is vecv_(2) - vecv(1) . (a) Statement -1 is True, statement -2 is true , statement -2 is a correct explanation for statement -1 (b) Statement 1 is True , Statement -2 is True , statement -2 is NOT a correct explanation for statement -1 (c) Statement - 1 is True , Statement -2 is False (d) Statement -1 is False, Statement -2 is True

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A train is moving slowly on a straightly track with a constant speed of 2 ms^(-1) . A passenger in the train starts walking at a steady speed of 2 ms^(-1) to the back of the train in the opposite direction of the motion of the train . So, to an observer standing on the platform directly in the front of that passenger appears to be

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AAKASH SERIES-UNITS AND MEASUREMENT-EXERCISE - I
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  6. (A) The correctness of an equation is verified using the principle of ...

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  7. Which of the following is not a unit of time A) par - sec " " B)...

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  8. For a body in a uniformly accelerated motion, the distance of the body...

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  9. Three of the quantities defined below has the same dimensional formula...

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  10. If e, E0, h and C respectively represents electronic change, permittiv...

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  11. Photon is quantum of radiation with energy E=hv, where v is frequency ...

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  12. If Planck s constnat(h) and speed of light in vacuum (c) are taken as ...

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  13. Name of units of some physical quantities are given in List - 1 and th...

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  14. Match the following : {:("List - 1","List - 2"),((a) "second" ,(e) "...

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  15. Name of units of some physical quantities are given in List - 1 and th...

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  16. Match List I with List II and select the correct answer using the code...

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  17. Dimensional formula formula for thermal conductivity is (here K denote...

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  18. Force is given by the expression F = A cos (Bx) + C cos (Dt), where x ...

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  19. In the following 'I' refers to current and other symbols have their us...

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  20. If you lok out of the window of a fast moving train the nearby trees, ...

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