Advertisements
Advertisements
प्रश्न
Write true or false of the following statement.
The speed of light in vacuum is 3 × 108 ms-1.
पर्याय
True
False
उत्तर
True.
APPEARS IN
संबंधित प्रश्न
State whether light slows down or speeds up in the following cases :
Light going from air to glass.
State whether light slows down or speeds up in the following cases :
Light going from glass to water.
When light travels from a denser to a rarer medium, its speed ______.
An obliquely incident light ray bends at the surface due to a change in speed when passing from one medium to another. The ray does not bend when it is incident normally. Will the ray have a different speed in the other medium?
Higher Order Thinking Skills.
Light ray emerges from water into air. Draw a ray diagram indicating the change in its path in water.
Light travels ______ kilometers per second in air or vacuum. In theory, nothing can travel faster than light.
Objects that allow light to pass through partially are called ______ material.
Define transparent materials. Give example.
Light is one of the slowest traveling energy with a speed of 3 × 10-8ms-1
Light travels a distance of '10x' units in time 't1' in vacuum and it travels a distance of 'x' units in time 't2' in a denser medium. Using this information answer the question that follows:
'Light covers a distance of '20x' units in time 't1' in diamond'. State true or false.
