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Earn 100

Which waves are used in sonography?
(a)Microwaves
(b)Infra-red waves
(c)Sound waves
(d)Ultrasonic waves

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Important Questions on Wave Motion on a String
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The correct match between the entries in column I and column II are :
I | II | ||
Radiation | Wavelength | ||
a | Microwave | i | |
b | Gamma rays | ii | |
c | A.M. radio | iii | |
d | X–rays | iv |

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Match the following:
Column | Column | ||
(a) | Transverse wave through a steel rod | (i) | |
(b) | Longitudinal waves in earth's crust | (ii) | |
(c) | Longitudinal waves through a steel rod | (iii) | |
(d) | Ripples | (iv) |

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The electric field of a plane electromagnetic wave is given by . Its magnetic field will be given by

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(1) Optical Fibre Communication | (P) Ultrasound |
(2) Radar | (Q) Infrared Light |
(3) Sonar | (R) Microwaves |
(4) Mobile Phones | (S) Radio Waves |
From the options given below, find the most appropriate match between entries in the left and the right column.

