What kind of diagonal matrix is a scalar matrix?

A. जिसकी diagonal entries बराबर हों / Diagonal entries are equal

Step 1: Identify the concept: this is scalar matrix. Step 2: A scalar matrix is a diagonal matrix whose all diagonal elements are equal. Step 3: Remember scalar matrix with equal diagonal values.

Step 1: concept पहचानें: यह scalar matrix है। Step 2: Scalar matrix diagonal matrix होती है जिसमें सभी diagonal elements equal होते हैं। Step 3: Scalar matrix को equal diagonal values से याद रखें।