Question :
A) transverse
B) longitudinal
C) electromagnetic
D) polarised
Answer : B
Sound waves in air are
A) transverse
B) longitudinal
C) electromagnetic
D) polarised
Answer : B
Description :
Related Questions - 1
Planets do not twinkle because
A) they emit light of a constant intensity
B) their distance from the earth does not change with time
C) they are very far away from the earth resulting in decrease in intensity of light
D) they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable
Related Questions - 2
Light from the Sun reaches us in nearly
A) 2 minutes
B) 4 minutes
C) 8 minutes
D) 16 minutes
Related Questions - 3
Metals are good conductors of electricity because
A) they contain free electrons
B) the atoms are lightly packed
C) they have high melting point
D) All of the above
Related Questions - 4
out of the following, which is not emitted by radioactive substance?
A) Electrons
B) Electromagnetic radiations
C) Alpha particles
D) Neutrons
Related Questions - 5
If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same
A) velocity
B) momentum
C) acceleration
D) kinetic energy