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Directions for Question : Read the passage given below and answer the questions with the most appropriate choice.

 

In recent years, there has been a surge in interest surrounding renewable energy sources as a means to combat climate change and reduce dependence on fossil fuels. Solar power, in particular, has emerged as a promising alternative. Photovoltaic (PV) cells, which convert sunlight directly into electricity, are at the forefront of solar energy technology.

 

The efficiency of PV cells has steadily improved with advancements in materials science and engineering. Thin-film solar cells, for example, use layers of semiconductor materials to capture sunlight, allowing for flexibility and reduced weight compared to traditional silicon-based cells. This innovation has opened up new applications, such as integrating solar cells into building materials or clothing.

 

However, challenges remain in harnessing the full potential of solar energy. Energy storage is a critical aspect, as sunlight is intermittent and not always available when energy demand is highest. Batteries and other storage technologies are being developed to address this issue, but further progress is needed.

 

Moreover, the environmental impact of solar cell production and disposal is a topic of concern. While solar energy is clean and sustainable once operational, the manufacturing process can involve the use of chemicals and rare materials. Proper recycling and disposal methods are essential to minimise environmental harm.

 

Despite these challenges, the growing investment and research in solar technology signal a positive trajectory towards a more sustainable energy future.

Question:

What advantage do thin-film solar cells offer over traditional silicon-based cells?

 

Option: 1

They allow for flexibility and reduced weight.


Option: 2

They have higher efficiency in capturing sunlight.


Option: 3

They are more durable and long-lasting.

 


Option: 4

They require fewer semiconductor materials.


Answers (1)

The passage mentions, "Thin-film solar cells, for example, use layers of semiconductor materials to capture sunlight, allowing for flexibility and reduced weight compared to traditional silicon-based cells." This highlights the advantage of thin-film solar cells.

Posted by

Ramraj Saini

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