23 in a double - silt experiment, the optical Poets difference between the waves coming from two Coherent sources at a point pont one side of the central bright band is 75x10 m land that a point o en the other side of g on the central bright band is 18x10m How many bright dazle hands are observed between Point P and q if the wavelength of light used is 6x 10m?
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Suppose the length of a spring varies with respect to a weight attached to it. If the length of a spring is 6 cm when a weight of 1 kg is attached and 9 cm when a weight of 3 kg is attached, then which of the following statements is true?
The original length of the spring(when no weight is attached) is 4.5 cm.
The original length of the spring(when no weight is attached) is 5 cm.
The length of the spring will be 13.5 cm when a weight of 6 kg is attached.
The length of the spring will be 12 cm when a weight of 5 kg is attached.
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