[B] Light changes its path because light only travels in straight line. Speed of light is different in different media. As the medium changes, the light has to choose a path of minimum time. Hence, the direction of the light changes. This phenomenon is known as refraction of light.
[B] Light changes its path because light only travels in straight line.
Speed of light is different in different media. As the medium changes, the light has to choose a path of minimum time.
Hence, the direction of the light changes. This phenomenon is known as refraction of light.
The light changes its path as its medium changes. Which of the following is an incorrect statement?
[B] Light changes its path because light only travels in straight line. Speed of light is different in different media. As the medium changes, the light has to choose a path of minimum time. Hence, the direction of the light changes. This phenomenon is known as refraction of light.
[B] Light changes its path because light only travels in straight line.
See lessSpeed of light is different in different media. As the medium changes, the light has to choose a path of minimum time.
Hence, the direction of the light changes. This phenomenon is known as refraction of light.
A small bulb is placed at the focal point of a converging lens. When the bulb is switched on, the lens produces:
(c) a parallel beam of light
(c) a parallel beam of light
See lessWhich of the following is an incorrect statement for living organisms.
(c) Movement of molecules does not take place among cells.
(c) Movement of molecules does not take place among cells.
See lessAs air passes through the nasal cavity, it is
(D) All of these
(D) All of these
See lessWhy are sound waves called mechanical waves?
Sound waves are called mechanical waves because they require a material medium for their propagation.
Sound waves are called mechanical waves because they require a material medium for their propagation.
See less