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- 1. Question
Longitudinal waves do not exhibit
- 2. Question
A man stands in front of a tall wall and produces a sound. If he receives the echo of the sound two seconds later, calculate the distance from the wall. (The speed of sound in air is 300ms-1)
- 3. Question
The sound from a bell in a enclosed jar gradually faints away while the jar is being evacuated. Which of the following explains this observation?
- 4. Question
Light travels ins straight lines. In which of the following is this principle manifested?
I. Pinhole camera
II. Formation of shadows
III. Diffraction of light
IV. Occurrence of eclipse