NEET Physics: Questions 1426 - 1430 of 2099
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Question number: 1426
The unpolarised light and polarised light can be distinguished from each other by using polaroid.
A polaroid is capable of producing plane polarised beams of light.
|a.||Ꭺ is false but Ꭱ is true|
|b.||Ꭺ is true but Ꭱ is false|
|c.||Both Ꭺ and Ꭱ are false|
|d.||Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ|
Question number: 1427
Question number: 1428
A wire of cross sectional area 3 mm 2 is just stretched between two fixed points at a temperature of 20° C. Determine the tension when the temperature falls to 20° C. Coefficient of linear expansion a = 10 -5 °C -1 and Y = 2 × 10 11 N/m 2.