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5.work,energy,power and collision — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics5.work,energy,power and collision1 Mark
MCQ
A particle is moved from $(0, 0)$  to $(a, a)$  under a force $F = (3\hat i + 4\hat j)$ from two paths. Path $1$ is $OP$ and path $2$  is $OQP$ . Let $W_1$ and $W_2$ be the work done by this force in these two paths respectively. Then
  • ✓
    $W_1 = W_2$
  • B
    $W_1 = 2W_2$
  • C
    $W_2 = 2W_1$
  • D
    $W_2 = 4W_1$
✓

Answer

Correct option: A.
$W_1 = W_2$
a
The force is constant and hence conservative

$\therefore W_{1}=W_{2}$

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