Does the light ray bend towards the normal or away from the normal? The ray of light bends towards the normal. When a ray of light enters from an optically rarer medium (having low refractive index) to an optically denser medium (having high refractive index), its speed slows down and it bends towards the normal.
Q. What will be the angle of reflection if a ray of light strikes a plane mirror at an angle of 90?
– The angle of reflection is equal to the angle of incidence, therefore, when a ray strikes the mirror at 90 degrees, the ray reflects back in the opposite direction on the same path, that is at 90 degrees.
Table of Contents
- Q. What will be the angle of reflection if a ray of light strikes a plane mirror at an angle of 90?
- Q. Are of light Travelling in air goes into water?
- Q. When a ray of light enters into water from air its wavelength?
- Q. When the light enters from air to water then its frequency?
- Q. When a light wave goes from air into water the quality that remains unchanged is it?
- Q. When light enters water from vacuum then the wavelength of light?
- Q. What is the wavelength of this light in water?
Q. Are of light Travelling in air goes into water?
Answer: When a ray of light travels from air into water obliquely, it bends towards the normal. This is because water is optically denser than air. On entering water, speed of light decreases and the light bends towards normal.
Q. When a ray of light enters into water from air its wavelength?
So, when the light enters the water from the air, the energy of the light rays will remain the same, its frequency also will remain the same, But the speed of the light is decreasing, so that the wavelength of the light also decreases. Hence, the option (A) is the correct answer.
Q. When the light enters from air to water then its frequency?
Explanation:frequency not change when medium is change but speed and wavelength changes with change in medium. Speed and wavelength decreases when light travels from rare to denser medium.
Q. When a light wave goes from air into water the quality that remains unchanged is it?
Answer. Frequency remains samewhen light wave goes from air into water.
Q. When light enters water from vacuum then the wavelength of light?
Hence, wavelength of light decreases, when light enter to water from vacuum.
Q. What is the wavelength of this light in water?
Therefore, the wavelength of light is smaller in any medium than it is in vacuum. In water, for example, which has n = 1.333, the range of visible wavelengths is 380 nm1.333 380 nm 1.333 to 760 nm1.333 760 nm 1.333 , or λn = 285 to 570 nm.
