The speed of sound in air at sea level is approximately____________
(A) 300 meter per second
(B) 320 meter per second
(C) 340 meters per second
(D) 370 meter per second
which of these plants open its mouth when insect sit on its lid
(A) Sunflower
(B) Pitcher plant
(C) Brassica Plant
(D) None of these
Who developed the telegraph code
(A) Andre Ampere
(B) Samuel Morse
(C) Joseph Henry
(D) Jean Fourier
Moon light reaches to earth in___________seconds
(A) 0.3 seconds
(B) 1.3 seconds
(C) 2.3 seconds
(D) 3.3 seconds
The energy stored in a dam is___________
(A) Kinetic energy
(B) Electrical energy
(C) Potential energy
(D) None of these