## In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles nλ / a . Justify this by suitably dividing the slit to bring out the cancellation.

In deriving the single slit diffraction pattern, it was stated that the intensity is zero at angles nλ / a . Justify this by suitably dividing the slit to bring out the cancellation.

## Answer the following questions: (a) When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. Suggest a possible explanation.

Answer the following questions: (a) When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. Suggest a possible explanation. (b) As you have learnt in the text, the principle of linear Read More …

## A parallel beam of light of wavelength 500 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1 m away. It is observed that the first minimum is at a distance of 2.5 mm from the centre of the screen. Find the width of the sit.

A parallel beam of light of wavelength 500 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1 m away. It is observed that the first minimum is at a distance of 2.5 mm from Read More …

## Two towers on top of two hills are 40 km apart. The line joining them passes 50 m above a hill halfway between the towers. what is the longest wavelength of radio waves, which can be sent between the towers Without appreciable diffraction effects?

Two towers on top of two hills are 40 km apart. The line joining them passes 50 m above a hill halfway between the towers. what is the longest wavelength of radio waves, which can be sent between the towers Without appreciable Read More …

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