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(d) All of these
(c) 0°
(b) 60°
(d) vacuum
The functions of stomata include.
(d) All of these
(d) All of these
See lessA sound wave strikes the surface of a reflecting body perpendicularly. The angle of incidence is
(c) 0°
(c) 0°
See lessIf the angle of incidence is 30° the angle between reflected ray and reflecting surface is
(b) 60°
(b) 60°
See lessSound cannot travel through
(d) vacuum
(d) vacuum
See less