Home › MHT-CET › Physics › Systems of Particles and Rotational Motion › If $\hat{i}$, $\hat{j}$, $\hat{k}$ are right-han…
If $\hat{i}$, $\hat{j}$, $\hat{k}$ are right-handed orthogonal unit vectors, then $\hat{i} \times \hat{j}$ equals:
A$\hat{i}$
B$\hat{j}$
C$\hat{k}$
D$-\hat{k}$
Answer & Solution
Correct answer: C. $\hat{k}$
By the right-hand rule for the cross product, $\hat{i} \times \hat{j} = \hat{k}$. The cyclic order i → j → k gives the positive sign.
Related questions
Three particles of masses 100 g, 150 g and 200 g are placed at the vertices O(0, 0), A(0.5A projectile is launched and follows the parabolic trajectory shown in the figure. Midway For a homogeneous (uniformly dense) thin circular disc, the centre of mass lies at:A uniform L-shaped thin lamina of total mass 3 kg is made of three identical 1 m × 1 m squTwo point particles of equal mass are placed at x = 2 m and x = 8 m on the x-axis. Where d