Wave Motion One Liner Questions & Answers


Questions Answers
1 An example of a longitudinal wave is – Sound wave
2 Sound wave in air is – longitudinal
3 In a Sitar, which type of sound vibrations are produced? Stationary and Transverse
4 Long radio waves are reflected by which layer of the earth’s surface – Ionosphere
5 Wireless communication is reflected back to the earth’s surface by the – Ionosphere
6 Waves of the Ultra High Frequency (UHF) range normally propagate by means of – Space waves
7 Which waves cannot be transmitted through a vacuum? Sound wave
8 Cosmic rays – Are charged particles
9 What is the distance between two successive crests or successive troughs called? Wavelength
10 The velocity of electromagnetic waves is – 3 × 108ms–1
11 Which electromagnetic radiation has the maximum energy? X-rays
12 Microwaves are electromagnetic waves having frequencies in the range of – 1 GHz – 300 GHz
13 A radar which detects the presence of an enemy aircraft uses – Radio waves
14 When there is a depletion of ozone in the stratosphere, the wavelength of radiation striking the earth’s surface will be – 10–7 m
15 The waves used in common TV remote control are – Infrared Rays
16 What does a TV remote control unit use to operate a TV set? Radio waves
17 Waves used for telecommunication are – Microwave
18 FM broadcasting service uses the range of frequency bands between – 88-108 MHz
19 A radio station broadcast at 30-metre band. The frequency of the carrier wave transmitted by this station is – 10 MHz
20 CT Scan is done by using – X-Rays