A match box exhibits
[MP PET 1993, 95]
Cubic geometry
Monoclinic geometry
Orthorhombic geometry
Tetragonal geometry
Orthorhombic geometry has and . The shape of match box obey this geometry
In a PN-junction diode [MP PET 1993]
When lead storage battery is charged
[MP PET 1993; MP PMT 2000]
Image formed by a convex mirror is [MP PET 1993]
Among the following a natural polymer is [MP PET 1993; BCECE 2005]