Question:
Name the electromagnetic waves which are used for
(i) detection of fractures in bones
(ii) physiotherapy
(iii) radar systems
Also write their wavelength range.
Name the electromagnetic waves which are used for
(i) detection of fractures in bones
(ii) physiotherapy
(iii) radar systems
Also write their wavelength range.
(ii) physiotherapy
(iii) radar systems
Also write their wavelength range.
Show Hint
Shorter wavelength EM waves have higher energy:
Gamma > X-rays > UV > Visible > IR > Microwaves > Radio waves
Updated On: Jul 2, 2026
Show Solution
Verified By Collegedunia
Solution and Explanation
(i) Detection of fractures in bones
Wave type: X-rays
X-rays have very high energy and short wavelength, which allows them to penetrate soft tissues but get absorbed by dense materials like bones, making fractures clearly visible in medical imaging. \[ \lambda \approx 10^{-12}\ \text{m} \text{ to } 10^{-8}\ \text{m} \] (ii) Physiotherapy
Wave type: Infrared rays
Infrared radiation produces heat energy which is used in physiotherapy to relax muscles, improve blood circulation, and provide therapeutic heat treatment. \[ \lambda \approx 10^{-6}\ \text{m} \text{ to } 10^{-3}\ \text{m} \] (iii) Radar systems
Wave type: Microwaves
Microwaves are used in radar systems because they can travel long distances, reflect well from objects, and are suitable for detecting aircraft, ships, and weather patterns. \[ \lambda \approx 10^{-3}\ \text{m} \text{ to } 10^{-1}\ \text{m} \]
Wave type: X-rays
X-rays have very high energy and short wavelength, which allows them to penetrate soft tissues but get absorbed by dense materials like bones, making fractures clearly visible in medical imaging. \[ \lambda \approx 10^{-12}\ \text{m} \text{ to } 10^{-8}\ \text{m} \] (ii) Physiotherapy
Wave type: Infrared rays
Infrared radiation produces heat energy which is used in physiotherapy to relax muscles, improve blood circulation, and provide therapeutic heat treatment. \[ \lambda \approx 10^{-6}\ \text{m} \text{ to } 10^{-3}\ \text{m} \] (iii) Radar systems
Wave type: Microwaves
Microwaves are used in radar systems because they can travel long distances, reflect well from objects, and are suitable for detecting aircraft, ships, and weather patterns. \[ \lambda \approx 10^{-3}\ \text{m} \text{ to } 10^{-1}\ \text{m} \]
Was this answer helpful?
0
0
Top CBSE CLASS XII Physics Questions
- A boy of mass 50 kg is standing at one end of a, boat of length 9 m and mass 400 kg. He runs to the other, end. The distance through which the centre of mass of the boat boy system moves is
- A capillary tube of radius r is dipped inside a large vessel of water. The mass of water raised above water level is M. If the radius of capillary is doubled, the mass of water inside capillary will be
- A circular disc is rotating about its own axis. An external opposing torque 0.02 Nm is applied on the disc by which it comes rest in 5 seconds. The initial angular momentum of disc is
- A circular disc is rotating about its own axis at uniform angular velocity \(\omega.\) The disc is subjected to uniform angular retardation by which its angular velocity is decreased to \(\frac {\omega}{2}\) during 120 rotations. The number of rotations further made by it before coming to rest is
- A constant power is supplied to a rotating disc. The relationship between the angular velocity $\omega$ of the disc and number of rotations (n) made by the disc is governed by
View More Questions
Top CBSE CLASS XII Electromagnetic Spectrum Questions
- The given diagram exhibits the relationship between the wavelength of the electromagnetic waves and the energy of photons associated with them. The three points P, Q, and R marked on the diagram may correspond respectively to:
- Electromagnetic waves used in a diagnostic tool in medicine have a wavelength range
- Name the electromagnetic waves which are used for (i) detection of fractures in bones
(ii) physiotherapy
(iii) radar systems
Also write their wavelength range. - Electromagnetic waves used in a diagnostic tool in medicine have a wavelength range
- What are infrared waves ? Why are these waves referred to as ‘heat waves’ ? Give any two uses of these waves.
Top CBSE CLASS XII Questions
- 2, b, c are in A.P. and the range of determinant $\begin{vmatrix}1&1&1\\ 2&b&c\\ 4&b^{2}&c^{2}\end{vmatrix}$ is [2, 16]. Then find range of c is
- A boy of mass 50 kg is standing at one end of a, boat of length 9 m and mass 400 kg. He runs to the other, end. The distance through which the centre of mass of the boat boy system moves is
- A capillary tube of radius r is dipped inside a large vessel of water. The mass of water raised above water level is M. If the radius of capillary is doubled, the mass of water inside capillary will be
- A circular disc is rotating about its own axis. An external opposing torque 0.02 Nm is applied on the disc by which it comes rest in 5 seconds. The initial angular momentum of disc is
- A circular disc is rotating about its own axis at uniform angular velocity \(\omega.\) The disc is subjected to uniform angular retardation by which its angular velocity is decreased to \(\frac {\omega}{2}\) during 120 rotations. The number of rotations further made by it before coming to rest is
View More Questions