Tag: some natural phenomena

Questions Related to some natural phenomena

When a body gains electrons it acquires

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging

  1. positive charge

  2. negative charge

  3. partially positive charge

  4. partially negative charge

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Correct Option: B
Explanation:

When body gains electrons it gets negatively charged.

The device, which can be used to detect whether an object is charged, is:

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging

  1. telescope

  2. microscope

  3. electroscope

  4. none of the above

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Correct Option: C
Explanation:

Electroscope is a device that is used for detection and identification of charges on objects.

When two bodies are charged by rubbing they acquire:

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging

  1. equal and opposite charge

  2. equal and same charge

  3. negative charge

  4. positive charge

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Correct Option: A
Explanation:

When two bodies are rubbed on one another, they acquire charges equal in amount and opposite in nature.

When two positively charged materials will be placed close together:

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging

  1. both will repel each other.

  2. both will become negative.

  3. both will attract each other.

  4. no interaction / change will be observed.

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Correct Option: A
Explanation:

Same charges repel while opposites charges attract each other when placed together.

The objects which acquires small electric charges, when rubbed with each other, are called:

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging

  1. electric objects

  2. charged objects

  3. neutral objects

  4. none of the above

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Correct Option: B
Explanation:

In the process of rubbing objects with one another, both acquire small electric charges. These objects are called charged objects.

Rub an empty ball pen refill on a polythene sheet and hold it on top of small pieces of paper. What will be your observation?

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging

  1. Pieces of paper are attracted.

  2. Pieces of paper are repelled.

  3. Pieces of paper are neither attracted nor repelled.

  4. Pieces of paper are either attracted or repelled.

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Correct Option: A
Explanation:

When refill is rubbed on polythene it acquires small electric charges. Due to presence of these charges, pieces of paper gets attracted.

What is the frictional order of the following materials on rubbing:

ebonite, glass rod, wool, plastic

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging transfer of charge

  1. Wool, glass rod, ebonite, plastic

  2. Glass rod, wool, plastic, ebonite

  3. Wool, glass rod, plastic, ebonite

  4. Glass rod, wool, ebonite, plastic

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Correct Option: D
Explanation:

When any of these materials are rubbed together, the one in higher order gets positive charge (+) and the one in the lower order gets negative charge (-). The correct frictional order is: glass, wool, ebonite and plastic.

What kind of electric charge is acquired on a glass rod when it is rubbed with silk cloth?

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging transfer of charge

  1. Positive charge

  2. Negative charge

  3. Partially positive charge

  4. Partially negative charge

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Correct Option: A
Explanation:

By convention, glass acquire higher order than silk as losses electron. So, on rubbing, glass acquires positive charge and silk acquires negative charge.

When a plastic rod is rubbed with the fur, what charge does the plastic rod get?

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging transfer of charge

  1. Positive

  2. Negative

  3. Neutral

  4. None of the above

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Correct Option: B
Explanation:

Plastic comes below fur in the frictional series of electric charges. So, fur will get positive charge and plastic rod will get the negative charge.

When an object is rubbed by another, the objects get charged - one as positive and another as negative. In electrostatic series:

physics some natural phenomena types of charges and their interaction transfer of charges charging and discharging transfer of charge

  1. the one being positively charged comes first.

  2. the one being negatively charged comes first.

  3. both the objects come together.

  4. objects appear as per their atomic numbers.

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Correct Option: A
Explanation:

When two bodies are rubbed for charging, the one acquiring positive charge comes first, on a higher position, in electrostatic series. From the series, it may be interpreted that if two objects are rubbed with each other, the one coming higher in the series will acquire positive charge and the other coming lower in the series will acquire negative charge.