B) Define: Light
4.
Answer the following question. (Any 2)
The speed of sound in air at 0°C is 332m/s. If it increase at the rate of
0.6n/s per degree, what will be the temperature when the velocity has
increased to 344 m/s.
2) Distinguish between-
Infrasound and Ultrasound
3) Give Reason:
We cannot hear the echo produced in a classroom.
4) Explain the difference between a plane mirror, a concave mirror and a
convex mirror with respect to the types and sizes of the images produced
Answers
Answered by
0
Answer:
the energy which gives us light ex. sunlight,lamb etc and which we can see the eyes
Answered by
0
Answer:
light is a light which is also called as light
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