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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.


Option a

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Posted by

K Abhishek

Write biosketch of your favourite personlity (leaders, scientists,sports man,writers)

My Favorite Sportsman is Irishman Conor Mcgregor became the biggest star in the sport of mixed martial arts while claiming the ultimate fighting championship's featherweight and lightweight titles. He is the biggest superstar in the History of Sports. After joining the UFC in 2013. He unified the featherweight division with his title win in 2015, and the following year he became a two-division champion by winning the Lightweight title. Mcgregor also famous for the Boxing match with Floyd Mayweather in 2017, He suddenly retired from MMA in 2019, before returning with a victory in JAN 2020. 

He was Born on July 14, 1988, in Dublin, Ireland. He was a member of Crumlin Boxing club from age  11 to 17 winning the Dublin Novice championship during that time. His nickname is The Notorious, In his later teen years, McGregor began training in the still little-known sport of mixed martial arts, under John Kavanagh. He also found a job as an apprentice plumber but elected to forego the profession, over his parents' objections, to pursue his dream of becoming a professional fighter. He is an amazing person and He is in 1st Position in the List of Forbes 2021.

 

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Posted by

Deependra Verma

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What is the difference between home and house...?

Often;people;use;the;words; extbfhome;and; extbfhouse;interchangeably;assuming\*they;mean;the;same.;When;you;point;out;to;a;building;and;say; it;is;your\* extbfhouse,;you;mean;the;physical;building,;whereas;when;you ;say;it;is;your\* extbfhome,;you;mean;it;is;the;place;where;your;family; lives.;

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Posted by

Deependra Verma

" Ie Ovele Ouye" is I Love You in what language?

In Pig Latin language - 

" Ie Ovele Ouye" is I Love You in what language

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Posted by

Deependra Verma

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

A.The reasons why piracy flourishes are two.

B. The problem is not with the laws but with enforcement.

C. Somehow they still do not realize the seriousness of the crime or its economic ramifications.

D. I have been a part of a drive against copyright theft for over two decades now.

E. The first is the lack of awareness amongst the enforcement agencies.

  1. ADBCE

  2. AECBD

  3. DBAEC

  4. ABDEC

The correct option will be option 3. After reading the sentences, it should be clear that AE should definitely come after each other because they form a pair. There are two options which suffice this i.e. 2 and 3. Now, starting with D helps to locate the topic on which these lines have been written i.e. copyright theft and A states the reason.

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Posted by

neha

artificial chemical means. The most common agent used today is formaldehyde, which is infused to replace body fluids.

The second sentence can best be replaced by:

1) Body fluids are replaced by formaldehyde, the most widely used agent today.

2) The most common agent "body fluids" are used to replace formaldehyde.

3) Formaldehyde is most widely used today along with the body fluids.

4) To replace body fluids the most common agent is to be used.

The correct answer is option 1 as it covers the necessary details clearly. In option 2, most common agent is mentioned as ‘body fluids’ which is wrong. In option 3, it is written that formaldehyde is used with body fluids which is wrong as it replaces body fluids. In option 4, formaldehyde is not mentioned.

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Posted by

neha

NEET 2024 Most scoring concepts

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