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This report talks about Corona Virus and its impact on the Indian Economy. The Aviation Sector, Pharmaceutical Sector, Tourism and Hotel Sector and Entertainment Sector are studied and analyzed individually and includes current information related to their industry, analyzing the economic impact of COVID – 19 on these sectors in India along with suggestions for these sectors to grow again and improve themselves. The main objective of this report is to analyze the impact of COVID-19 on the Indian Economy and these 4 sectors. The research done is a secondary research as the data available online through research papers, online articles and industry reports were sufficient for the research, and also during the current pandemic, primary research wasn’t possible. The research involved data from various sources including articles from sources like LiveMint, Economic Times and India Today and The Wire and also articles by Pharmaceutical Technology, Brand Equity, BW Hotelier, etc. Industry reports by the Indian Brand Equity Foundation and Deloitte. The report by Deloitte was specific to the pharmaceutical sector and the effect of COVID- 19 on the sector. The industry reports by the Indian Brand Equity Foundation gave an idea about a standard condition of the sector in the country and who all are the market leaders. Data from the Government of India Website and FICCI website and articles were also taken to get authentic insights about the situation. The results show us that even though the pharmaceutical sector had some problems they are still growing and television and online media and entertainment are growing in the entertainment sector but the Cinema Halls are closed. The aviation sector had been hit very badly due to the airports all around the world being shut but with time some flights everyday are opened for urgent purposes with a lot of precautions and maybe till the end of the year they get back to their original state. The tourism and hospitality sector has been hit the worst. This was one of the last sectors being allowed by the government to open in the lockdown transition. The restaurants need to follow strict social distancing norms and various preventions to maintain sanitation and have been allowed to open from 8th June. This sector will comparatively take a lot of time to recover as the rule given by the Government to not allow more than 50 people in a social gathering can cause losses to this sector. As the government has started relaxing norms, it is expected that with time these sectors will be able to recover their losses and the economy will come back on track with the growth of technology and the aim of the country to become self-sufficient.

Highly sensitive terahertz (THz) sensors for a myriad of applications are rapidly evolving. A widespread sensor concept is based on the detection of minute resonance frequency shifts due to a targeted specimen in the sensors environment. Therefore, cutting-edge high resolution continuous wave (CW) THz spectrometers provide very powerful tools to investigate the sensors' performances. However, unpredictable yet non negligible frequency drifts common to state-of-the-art CW THz spectrometers limit the sensors' accuracy for ultra-high precision sensing and metrology. Here, we overcome this deficiency by introducing an ultra-high quality (Q) THz microresonator frequency reference. Measuring the sensor's frequency shift relative to a well-defined frequency reference eliminates the unwanted frequency drift, and fully exploits the capabilities of modern CW THz spectrometers as well as THz sensors. In a proof-ofconcept experiment, we demonstrate the accurate and repeated detection of minute resonance frequency shifts of less than 5 MHz at 0.6 THz of a THz microresonator sensor.