Multiple Choice
The mirror used in automobiles to see the rear field of view is
A) concave
B) convex
C) plane
D) none of these
Correct Answer:
Verified
Correct Answer:
Verified
Q9: A pulse is a wave<br>A)of high duration<br>B)of
Q10: Echo is produced due to<br>A)reflection of sound<br>B)refraction
Q11: During the 19th century, light was considered
Q12: Sound waves cannot pass through<br>A)a solid-liquid mixture<br>B)an
Q13: Sound waves in air are _ waves.<br>A)longitudinal<br>B)radio<br>C)transverse<br>D)electromagnetic
Q15: Which of the following types of waves
Q16: Shaving mirrors are<br>A)convex mirrors<br>B)concave mirrors<br>C)plane mirrors<br>D)none of
Q17: SONAR is based on the principle of<br>A)echo<br>B)resonance<br>C)reverberation<br>D)any
Q18: A body which allows most of the
Q19: Who first proposed that light was wave-like