Which one of the following statements is wrong?
A) Sound travels in straight line
B) Sound travels in the form of waves
C) Sound is a form of energy
D) Sound travels faster in vacuum than in air
Correct Answer:
Verified
Q13: Among metals, the poorest conductor of heat
Q14: The correct order of electrical conductivity is
A)Al
Q15: Beakers A, B and C contain zinc
Q16: A particle is projected up with an
Q17: A stone is dropped into water from
Q19: The process of respiration is concerned with
A)liberation
Q20: Cyanobacteria are
A)bacteria
B)virus
C)algae
D)fungi
Q21: Which one of the following statements is
Q22: A. The resistance of super conductor is
Q23: The resistivity of a wire
A)increase with the
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