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RITWIK SINGH   from DAV Public School, Angul
Subject :Physics    Class : Class 7

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mananjain   from Modern School, Jaipur
Subject :Physics    Class : Class 7

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Sivaanshi   from Satya prakash, Jabalpur
Class : >Class 7
The image was not shown/given/visible

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Arya   from Global Indian International School, Ahmedabad
Class : >Class 8
cant see the match the following table

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Jaydeep Mohapatra   from ,
Subject :Physics    Class : Class 7

In each of the following questions, a statement of Assertion (A) is given followed by a corresponding statement of Reason (R) just below it. Of the statements, mark the correct answer as
Assertion : The position-time graph of uniform motion of a body can have negative slope.
Reason : When the speed of body decreases with time, the position-time graph of the moving body has negative slope.

A If both assertion and reason are true and reason is the correct explanation of assertion
B If both assertion and reason are true but reason is not the correct explanation of assertion
C If assertion is true but reason is false
D If assertion is false but reason is true.


Please tell the answer i think its option B but it is telling that B is wrong!!!

Ans 1:

Pushkar kumar   from DELHI PUBLIC SCHOOL, Gaya
Class : >Class 7
A

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Vansh   from Tagore International School, New Delhi
Subject :Physics    Class : Class 6

In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : The dark part of a shadow that receives small amount light from the source is umbra.
Reason : Umbra is formed only by an extended source of light.

A If both assertion and reason are true and reason is the correct explanation of assertion.
B If both assertion and reason are true but reason is not the correct explanation of assertion.
C If assertion is true but reason is false.
D If assertion is false but reason is true.


what is umbra?

Ans 1:

Niladri Chatterjee   from Maharishi Vidya Mandir, Kukatpally, Hyderabad
Class : >Class 8
Vansh, umbra is the darkest part of the shadow whereas penumbra is the lighter and slanting rays of the shadow which falls on a heavenly or celestial body during an eclipse. Hope it helped you. Regards, Niladri Chatterjee

Ans 2:

Niladri Chatterjee   from Maharishi Vidya Mandir, Kukatpally, Hyderabad
Class : >Class 8
Vansh, umbra is the darkest part of the shadow whereas penumbra is the lighter and slanting rays of the shadow which falls on a heavenly or celestial body during an eclipse. Hope it helped you. Regards, Niladri Chatterjee

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KavishJShah   from Sunflower school, Hyderabad
Subject :Physics    Class : Class 6

Ans 1:

Niladri Chatterjee   from Maharishi Vidya Mandir, Kukatpally, Hyderabad
Class : >Class 8
Caseiculture'gkyxuH<'">lcLxhF

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Dalia Datta   from NTS, KOLKATA
Subject :Physics    Class : Class 6

The magnetic field of a magnet is an invisible field which is created by magnetism. The force for magnets to attract other objects is caused by moving electrons. Magnets are made by using electrical and mechanical methods. A temporary magnet can be made by passing electricity through a coil.
Moving _____ is the cause of magnets repelling or attracting each other or other objects.

A protons
B electrons
C molecules
D neutrons


Ans 1:

Aadarsh S Nair   from BVM Global, Chennai
Class : >Class 6
quoting a part of the question "the force for magnets to attract other objects is caused by moving electrons" hence the answer to your question is option B electrons. a stationary charged particle such as an electron or a proton causes electric fields. A moving charged particle causes both an electric and magnetic field. When we consider real life magnets, they are made up of either atoms or molecules (or both). Since in an atom protons and neutrons(which are uncharged particles) are present in the nucleus it is nearly impossible to separate them from inside the atom. So whatever effect is observed in magnets it is mostly attributed to electrons. I hope that clears your doubt.

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Aahan pal   from KV no.1 bolangir, Bolangir
Subject :Physics    Class : Class 6

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KavishJShah   from Sunflower school, Hyderabad
Class : >Class 8
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KavishJShah   from Sunflower school, Hyderabad
Class : >Class 8
is disulfiram approved in canada

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Rayan   from Bharathiya Vidya Bhavans Public School , Hyderabad
Subject :Physics    Class : Class 6

There is a variety of materials that are used to make components of electrical circuits. These materials have good electrical conductivity. Inspite of having the largest conductivity among metals, silver is not used to make electric wires. Aluminium and copper are generally used to make electric wires. Not only conductors, insulators are also important. The electrical wires are covered with plastic and rubber like materials. This is used to prevent short circuit and also to protect the user.
What kind of materials are used to make electrical wires in an electric circuit?

A Insulators
B Conductors
C Electrolytes
D All of these


Ans 1:

Sanchal sairam   from Blooming buds bethania, Thrissur
Class : >Class 6
Conductors

Ans 2:

Aadarsh S Nair   from BVM Global, Chennai
Class : >Class 6
conducters is the answer

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amit84027   from GEMS MODERN ACADEMY, Dubai
Subject :Physics    Class : Class 7

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Ankush Ghosh   from DPS, Doha
Subject :Physics    Class : Class 8

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