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A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV. It can detect a signal of wavelength A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV. It can detect a signal of wavelength September 1, 2020 Category: Chapter 33 - Semiconductors , NEET Last [...]

A steel scale measures the length of a copper wire as 80.0cm when both area at 20C (the calibration temperature for scale). What would be the scale read for the length of the wire when both are at 40C? At room temperature (25C) the length of a steel rod is measured using a brass centimetre [...]

The given graph represents V-I characteristic for a semiconductor device. which of the following statement is correct ? The given graph represents V-I characteristic for a semiconductor device. which of the following statement is correct ? September 1, 2020 Category: Chapter 33 - Semiconductors , NEET Last 32 Years Solved 1988 - 2019 Physics and [...]

A steel tape 1m long is correctly calibrated for a temperature of 27.0 °C. The length of a steel rod measured by this tape is found to be 63.0 cm on a hot day when the temperature is 45.0 C. What is the actual length of the steel rod on that day? What is the [...]

In forward biasing of the p-n junction In forward biasing of the p-n junction September 1, 2020 Category: Chapter 33 - Semiconductors , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,

The barrier potential of a p-n junction depends on (1) type of semiconductor material (2) amount of doping (3) temperature Which one of the following is correct? The barrier potential of a p-n junction depends on (1) type of semiconductor material (2) amount of doping (3) temperature Which one of the following is correct? September [...]

Which one of the following statement is false ? Which one of the following statement is false ? September 1, 2020 Category: Chapter 33 - Semiconductors , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,

At room temperature (25C) the length of a steel rod is measured using a brass centimetre scale. The measured length is 20 cm. If the scale is calibrated to read accurately at temperature 0C, find the actual length of steel rod at room temperature. At room temperature (25C) the length of a steel rod is [...]

If a small amount of antimony is added to germanium crystal If a small amount of antimony is added to germanium crystal September 1, 2020 Category: Chapter 33 - Semiconductors , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,

A composite rod is made by joining a copper rod, end to end, with a second rod of different material but of the same area of cross section. At 25C, the composite rod is 1m long and the copper rod is 30cm long. At 125C the length of the composte rod increases by 1.91mm. When [...]