Q:

If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths?

A) lUV < lIR < lVIS	B) lUV > lVIS > lIR
C) lUV > lIR > lVIS	D) lUV < lVIS < lIR

Answer & Explanation Answer: D) lUV < lVIS < lIR

Explanation:

Infrared radiation, what we experience as heat when we hold our hand near a warm object, is somewhat longer wavelengths than visible light. Visible light is simply electromagnetic radiation in a range of wavelengths that our eyes are sensitive to. Visible wavelengths range from 0.0007 milimeters for red light, through orange, yellow, green, and blue, to 0.0004 milimeters for violet light. Ultraviolet is shorter wavelengths than violet.

Longer the wavelength,lower the energy

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

Which of the following performs modulation and demodulation?

A) coaxial cable	B) modem
C) fiber optic	D) satellite

Answer & Explanation Answer: B) modem

Explanation:

A modem is a hardware device which performs both modulation and demodulation. MODEM means (Modulator-Demodulator).

modem_1593758111.png image

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Q:

In the following question, a sentence has been given in Active/Passive voice. Out of the four alternatives suggested, select the one which best
expresses the same sentence in Passive/Active voice.
The teachers informed the students that the class had been cancelled.

A) Informing the students that the class is cancelled was done by the teachers.	B) The class has been cancelled, this the teachers informed the students.
C) The students were informed by the teachers that the class had been cancelled.	D) The teachers cancelled the class and informed the students.

Answer & Explanation Answer: C) The students were informed by the teachers that the class had been cancelled.

Explanation:

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Filed Under: English

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Q:

In each of the questions, four alternatives are given for the Idiom/Phrase. Choose the alternative which best expresses the meaning of the Idiom/Phrase and click the button corresponding to it.

Fit her like a glove.

A) Too large	B) Too shabby
C) Too tight	D) Perfectly

Answer & Explanation Answer: D) Perfectly

Explanation:

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Filed Under: English
Exam Prep: TOEFL , GRE , CAT

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Q:

Which of the following is present in a prokaryotic cell?

A) chloroplast	B) nucleoid
C) mitochondrion	D) nuclear envelope

Answer & Explanation Answer: B) nucleoid

Explanation:

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Filed Under: Biology
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Q:

Read each sentence to find out whether there is an error in it. The error, if any, will be in one part of the sentence. If there is no error, the answer will be “No Error”.

A) This is one of London’s most	B) important and ancient axial routes,
C) roughly following the line of	D) a Roman through-road.

Answer & Explanation Answer:

Explanation:

The given statement isgrammatically correct

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Q:

Contaminated rags are recommended for disposal in landfills.

A) TRUE

B) FALSE

Answer & Explanation Answer: B) FALSE

Explanation:

Workspace

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Subject: Physics
Exam Prep: Bank Exams

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Q:

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.

Ask or beg for something earnestly or humbly

A) Bequeath	B) Bestow
C) Accord	D) Supplicate

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