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Q:

A ball is thrown vertically upward from the ground. It crosses a point at the height of 25 m twice at an interval of 4 seconds. The ball was thrown with the velocity of

A) 18 m/s B) 25 m/s
C) 30 m/s D) 36 m/s
 
Answer & Explanation Answer: C) 30 m/s

Explanation:

The interval between object pass the same point is 4 sec.

That means in 2 sec, object reaches the top and in next 2 sec, it again reaches the same point.

By the info given, we can find the velocity of that point by using : v=u+(-gt)

0= u - 10×2

u = 20

Then the velocity at 25m is 20m/sec.

so the initial velocity is


-v2 = u2 + (-2gh)400 = u2 - 2x 10 x 25u2 = 900 => u = 30 m/s

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Filed Under: Physics
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8 7992
Q:

Where is a hub specified in the OSI model?

A) Physical Layer B) Data Link Layer
C) Application Layer D) Session Layer
 
Answer & Explanation Answer: A) Physical Layer

Explanation:

Hubs regenerate electrical signals, which are specified at the Physical layer.

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Filed Under: Networking
Exam Prep: CAT
Job Role: Analyst , Network Engineer

1 2957
Q:

Antonym of:: Amicable

A) Hostile B) Loveable
C) Friendly D) Peaceful
 
Answer & Explanation Answer: A) Hostile

Explanation:

Amicable means Friendly or in Loveable, peaceful sense.

Then Antonyms for Amicable are Opposite of Friendly => Unfriendly, Hostile, Unpeaceful, etc...

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Filed Under: Alphabet Test
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2 2131
Q:

Demand side market failures occur when

A) supply curves do not reflect the full cost of producing a good or services B) demand curves do not reflect consumer’s full willingness to pay for goods or services
C) government imposes tax on a good or a service D) a good or service is not produced because no one demands it
 
Answer & Explanation Answer: B) demand curves do not reflect consumer’s full willingness to pay for goods or services

Explanation:

Market failure arises because it is not possible for the market to correctly weight cost and benefits in a situation in which some of the cost is completely unaccounted.

Demand-side market failures happen when demand curves do not reflect consumer’s full willingness to pay for goods or services.

Supply-side market failures occur when supply curves do not reflect the full cost of producing a good or services.

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Filed Under: Marketing and Sales
Exam Prep: Bank Exams , CAT
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1 1815
Q:

The basic unit of the nervous system is the

A) Lymphs B) Nephrons
C) Nerves D) Neurons
 
Answer & Explanation Answer: D) Neurons

Explanation:

The basic unit of the nervous system is the Neurons.

 

The neuron is a single nerve cell, and you have billions of them.

There are three basic types of neurons::

1. Association,

2. Afferent  and

3. Efferent.

The association neurons comprise the central nervous system (CNS) that is the brain and spinal cord.

The afferent neurons are also known as the sensory neurons, they bring the stimuli from the sensors (e.g., skin, eyes, ears) to the CNS.

The efferent neurons are also known as motor neurons, they bring the responses from the brain to the muscles and the glands.

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Filed Under: Biology
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3 1811
Q:

The amount of water vapor in the air is

A) Hot air B) Humidity
C) Dew D) Foam
 
Answer & Explanation Answer: B) Humidity

Explanation:

The amount of water vapor ranges from a trace amount up to 4% of the mass of air. Water vapor exists as an invisible gas in the air.

 

The amount of water vapor in the air is called absolute humidity. The amount of water vapor in the air as compared with the amount of water that the air could hold is called relative humidity.

The maximum amount of water vapor that can be in the air depends on the air temperature.

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Filed Under: Physics
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4 1933
Q:

Keoladeo National Park is situated in which state?

A) Jharkand B) Rajasthan
C) Madhya Pradesh D) Uttar Pradesh
 
Answer & Explanation Answer: B) Rajasthan

Explanation:
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Filed Under: Indian Geography
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9 2910
Q:

With which Bank Google has tied up for its mobile payments app Tez?

A) SBI Bank B) Axis Bank
C) HDFC Bank D) PNB Bank
 
Answer & Explanation Answer: A) SBI Bank

Explanation:

Internet giant Google has tied up with State Bank of India (SBI) for its mobile payments app Tez. Through this partnership, Google Tez will allow users to create an SBI UPI Id - @oksbi and get access.

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Filed Under: General Awareness
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4 3979