- Visible rays
- Thermal infra-red
- Modulated infra-red
- Radio waves
Author: Zabeehullah
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- the energy of a particle always changes
- the restoring force is constant
- restoring force is always directed towardss a fixed point
- velocity of a particle is minimum at the centre of the path
- 50 rad/s²
- 25 rad/s²
- 12.5 rad/s²
- 6.25 rad/s²
- Optical fibres may have a homogeneous core with suitable cladding
- Optical fibres can be of graded refractive index
- The only disadvantage of optical fibres is that they are subjected to electromagnetic interference from outside
- Optical fibres have an extremely small transmission loss
- Frequency of the wave
- Wave length
- Phase difference
- Amplitude
- ¼
- ⅓
- 3
- 4
- Particle nature of light
- Diffraction
- Interference
- Polarisation
- A satellite cannot move in a stable orbit if its plane passes through the center of the earth
- Two geostationary satellites are sufficient for communication around the globe
- Geostationary satellites are launched in the equatorial plane and are made to move from west to east
- the speed of the satellite increases with an increase in the radius of the orbit
- (velocity of a particle
- acceleration of a particle
- time instant
- period of S.H.M.
- y is equal to A plus B plus C
- yis equal to A or B or C
- y is equal to A and B and C
- y is equal to A dot B dot C
- Longitudinal waves
- Transverse waves
- Sinusoidal waves
- Surface waves
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