Questions

Q:

A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift is 

A) greater than the weight of the man B) less than the weight of the man
C) Same as the weight of the man D) Zero
 
Answer & Explanation Answer: A) greater than the weight of the man

Explanation:

The weight of the man mg is acting on the floor. As the lift is moving up with an acceleration, say a, the man too in it is having this acceleration. The force producing this acceleration is ma. By Newton's third law, this force will have an equal reaction pressing the floor equal to ma. Therefore the total resultant reaction on the floor is mg+ma = m(g+a) which is mg, the weight of the man. So (a) is correct.

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Filed Under: Physics

1 3793
Q:

Who is known as the Father of Geometry?

A) Aryabhata B) Thales of Miletus
C) Pythagoras of Samos D) Euclid
 
Answer & Explanation Answer: D) Euclid

Explanation:

Euclid of Alexandria was a Greek mathematician, often referred to as the Father of Geometry.

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2 3791
Q:

SEBI decided to give an exemption to some companies from the requirement of the minimum 25 per cent public shareholding. Companies exempted from such requirement should fulfil which of the following norms?

A. They should have market capitalisation of Rs.1,000 crore

B. They should have 20 million shares listed

C. They should have a turnover of Rs.400 crore per annum

A) Only A B) Only B
C) Only C D) Both A & B
 
Answer & Explanation Answer: D) Both A & B

Explanation:
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Q:

Who invented Electrocardiograph(EKG)?

Answer

The EKG was invented by Willem Einthoven in 1903 and is used to monitor and analyze past and present heart activity in an individual.

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Subject: Inventions

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Q:

Who is the author of the Book 'Social Exclusion and Justice in India'?

A) Rakesh Kumar B) Arun Singh
C) M. Venkaiah Naidu D) P.S. Krishnan
 
Answer & Explanation Answer: D) P.S. Krishnan

Explanation:
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Filed Under: Books and Authors
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8 3788
Q:

Which of the following countries is passing through a crisis called as "Darfur Humanitarian Crisis"?

A) Uganda B) Somalia
C) Sudan D) Sierra Leone
 
Answer & Explanation Answer: C) Sudan

Explanation:
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1 3788
Q:

March 21 is observed as.......

A) World Environment Day B) World Forestry Day
C) World Greenary Day D) None of these
 
Answer & Explanation Answer: B) World Forestry Day

Explanation:
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1 3787
Q:

Which of these lines contains a metaphor?

A) You light up my life. B) She was fishing for compliments.
C) He broke my heart. D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

A metaphor is a figure of speech that is used to make a comparison between two things that aren't alike but do have something in common.

 

In all the given options we have Metaphors.

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Filed Under: English
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