Q:

A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be

A) a parabola	B) a circle
C) a horizontal straight line	D) a vertical straight line

Answer & Explanation Answer: A) a parabola

Explanation:

Parabola, because when the coin is dropped at a particular point, it has the same velocity as the running train. So by Newton's first law, it continues its motion horizontally with that velocity. But then, it is also pulled down by earth's gravity continuously. In this situation its horizontal motion gives way to the parabolic motion until it reaches the ground.

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Filed Under: Physics

2 3518

Q:

When two similar sources vibrate with slightly different frequencies , a regular rise and fall occurs in the loudness of tone. This phenomenon is known as

A) doppler effect	B) beats
C) resonance	D) echo

Answer & Explanation Answer: B) beats

Explanation:

Beats means the periodic increase and decrease in loudness heard when two notes of nearly the same frequency are sounded simultaneously.

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Filed Under: Physics

5 3518

Q:

Who invented Fountain Pen?

A) Sir Frank Whittle	B) John J. Loud
C) Kirkpatrick Macmillan	D) Lewis E. Waterman

Answer & Explanation Answer: D) Lewis E. Waterman

Explanation:

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Filed Under: Inventions

1 3517

Q:

All of the following are true of neurons except that

A) they conduct a nervous impulse	B) they are a very specialized form of connective tissue
C) thay are separated from one another by synapses	D) When mature, they lose ability to divide

Answer & Explanation Answer: B) they are a very specialized form of connective tissue

Explanation:

All of the following are true of neurons except that they are a very specialized form of connective tissue.

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Filed Under: Biology
Exam Prep: AIEEE
Job Role: Analyst

3 3516

Q:

How long is an IPv4 address?

A) 128 bytes	B) 32 bits
C) 32 bytes	D) 128 bits

Answer & Explanation Answer: B) 32 bits

Explanation:

Internet Protocol version 4 (IPv4) which defined an IP address as a 32-bit value

IPv4 is in contrast to IPv6, which defined an IP address as a 128 bits value.

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Filed Under: Networking
Job Role: Analyst , Bank Clerk , Network Engineer

0 3515

Q:

Which of the following is a Project to develop watersheds in India?

A) DRDO	B) CARE
C) AVARD	D) NWDPRA

Answer & Explanation Answer: C) AVARD

Explanation:

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Filed Under: General Awareness
Exam Prep: Bank Exams
Job Role: Bank PO

5 3515

Q:

The hormone that helps in the implantation of embryo

A) Testosterone	B) Insulin
C) Prolactin	D) Progesterone

Answer & Explanation Answer: D) Progesterone

Explanation:

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Filed Under: Biology

9 3514

Q:

Which of the following properties is found only in ferromagnetic materials ?

A) Susceptibility independent of temperature	B) Point in a particular direction
C) Hysteresis	D) Attracting a magnetic substance

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