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Know It Here Latest Questions

Kabin 2.0
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Kabin 2.0
Asked: June 20, 2020In: Physics MCQs

Joule-Ohm/Second-volt is equal to

  • 4

a. Ampere b. Tesla c. Watt d. Volt

a. Ampere

b. Tesla

c. Watt

d. Volt

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Answer
  1. Kabindra Dhakal
    Added an answer on June 20, 2020 at 10:49 pm

    The correct answer is option (d).

    The correct answer is option (d).

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knowithere
  • 3
knowithere
Asked: June 8, 2020

A water pump cannot lift water more than 10 meter high from earth surface. Why?

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A water pump cannot lift water more than 10 meter high from earth surface. Why?
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Answer
  1. Sagar poudel LEVEL 21
    Added an answer on June 8, 2020 at 12:35 pm

    This is because the positive displacement pump creates a partial vacuum on the suction side and atmospheric pressure then pushes the water up into the void. It cannot push the water any higher than the static head produced by atmospheric pressure, no matter how good the vacuum produce in the pump.

    This is because the positive displacement pump creates a partial vacuum on the suction side and atmospheric pressure then pushes the water up into the void. It cannot push the water any higher than the static head produced by atmospheric pressure, no matter how good the vacuum produce in the pump.

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Question Bank
  • 2
Question BankLEVEL 1
Asked: August 30, 2020In: Physics MCQs

A simple pendulum hanging freely and at rest is vertical because in that position

  • 2

a) Kinetic energy is zero b) Potential energy is zero c) Kinetic energy is minimum d) Potential energy is minimum

a) Kinetic energy is zero
b) Potential energy is zero
c) Kinetic energy is minimum
d) Potential energy is minimum

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Answer
  1. Sweety
    Added an answer on November 8, 2021 at 3:28 pm

    Potential energy is minimum

    Potential energy is minimum

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knowithere
  • 2
knowithereLEVEL 1
Asked: June 19, 2020In: Biology

In which group of animals you find flame cells?

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Answer
  1. Tmg enoch LEVEL 14
    Added an answer on June 23, 2020 at 1:09 pm

    In platyhelmithes , we can find flame cells.

    In platyhelmithes , we can find flame cells.

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Kabin 2.0
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Kabin 2.0
Asked: September 11, 2020In: Physics

In case of young’s double slit experiment if one slit covered with green and the other with blue transparent paper what will be the effect on interference pattern?

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Answer
  1. Kabindra Dhakal LEVEL 1
    Added an answer on September 11, 2020 at 7:54 pm

    The two slits in this position will emits different waves as the wavelength of blue and green lights are quite different. The sources are no longer coherent, hence there will be no interference.

    The two slits in this position will emits different waves as the wavelength of blue and green lights are quite different. The sources are no longer coherent, hence there will be no interference.

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Question Bank
  • 2
Question BankLEVEL 1
Asked: September 25, 2020In: Computer MCQs

The box that contains the central electronic components of the computer is the

  • 2

A) Motherboard B) System Unit C) Peripheral D) RAM

A) Motherboard

B) System Unit

C) Peripheral

D) RAM

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Answer
  1. knowithere LEVEL 21
    Added an answer on September 27, 2020 at 6:34 pm

    Option B is the correct answer!!! The box that contains the central electronic components of the computer is the System Unit.

    Option B is the correct answer!!!

    The box that contains the central electronic components of the computer is the System Unit.

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Question Bank
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Question BankLEVEL 1
Asked: December 30, 2020In: Physics MCQs

Which of the following is a renewable source of energy

  • 2

A) Natural gas B) Coal C) Wind D) Oil

A) Natural gas
B) Coal
C) Wind
D) Oil

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Answer
  1. knowithere LEVEL 21
    Added an answer on January 6, 2021 at 8:10 pm

    Option C is the correct answer!!!

    Option C is the correct answer!!!

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Question Bank
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Question BankLEVEL 1
Asked: May 12, 2020

what is gravity ?

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physicsscience
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Answer
  1. knowithere LEVEL 21
    Added an answer on May 13, 2020 at 3:57 pm

    The attraction force of the earth on the objective toward in centre with in it gravitational field is called gravity.

    The attraction force of the earth on the objective toward in centre with in it gravitational field is called gravity.

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Kabin 2.0
  • 2
Kabin 2.0
Asked: September 14, 2020In: Physics

Why is a spark produced in the switch of a fan when it is switched off?

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Answer
  1. Kabindra Dhakal LEVEL 1
    Added an answer on September 14, 2020 at 7:46 pm

    When fan is switched off, current decreases rapidly so that large change in magnetic flux occurs and large self induced emf is set up producing spark.

    When fan is switched off, current decreases rapidly so that large change in magnetic flux occurs and large self induced emf is set up producing spark.

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Kabin 2.0
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Kabin 2.0
Asked: May 12, 2020

Can a body have zero velocity but non-zero acceleration?

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Answer
  1. Shyam Stha LEVEL 21
    Added an answer on May 23, 2020 at 8:04 am

    When a body is thrown vertically upward at the highest point velocity is zero but there is acceleration.

    When a body is thrown vertically upward at the highest point velocity is zero but there is acceleration.

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