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Question

How many colours are available in a computer monitor with 16 bits per pixel depth?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
65536

Understanding Color Depth

Color depth, measured in bits per pixel (bpp), determines the number of possible colors a display can show. Each bit can represent two states (0 or 1). Therefore, a system with n bits per pixel can represent $2^n$ distinct colors.

Calculating Colors for 16 Bits Per Pixel

The question specifies a color depth of 16 bits per pixel.

  • Number of bits per pixel, $n = 16$.
  • The total number of available colors is calculated using the formula: Total Colors = $2^n$.
  • Substituting the value of $n$: Total Colors = $2^{16}$.
  • Calculating the value: $2^{16} = 65,536$.

Therefore, a computer monitor with 16 bits per pixel depth can display 65,536 different colors.

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