Question

If $ a $ , $ b $ , $ c $ are the lengths of three edges of unit cell, $ \alpha $ is the angle between side $ b $ and $ c $ , $ \beta $ is the angle between side $ a $ and $ c $ and $ \gamma $ is the angle between side $ a $ and $ b $ , what is the Bravais Lattice dimensions of a tetragonal crystal?

• A. $ a = b = c $ and $ \alpha = \beta = \gamma = 90^{\circ} $
• B. $ a = b \ne c $ and $ \alpha = \beta = \gamma = 90^{\circ} $
• C. $ a = b = c $ and $ \alpha = \beta = \gamma \ne 90^{\circ} $
• D. $ a \ne b \ne c $ and $ \alpha = \beta = \gamma = 90^{\circ} $

Answer 1

The Correct Option is B

Answer (b) $ a = b \ne c $ and $ \alpha = \beta = \gamma = 90^{\circ} $