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Amar Kumar 8 years ago

 Rutherford’s atomic model:-

  1. The positively charged particles and most of the mass of an atom were concentrated in an extremely small volume. He called this region of the atom as a nucleus.
  2. Rutherford’s model proposed that the negatively charged electrons surround the nucleus of an atom. He also claimed that the electrons surrounding the nucleus revolve around it with very high speed in circular paths. He named these circular paths as orbits.
  3. Electrons being negatively charged and nucleus being a densely concentrated mass of positively charged particles are held together by strong electrostatic force of attraction.
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In half rectifier only half of the ac is converted into dc and the frequency obtained is same as that of ac where as in full wave all the wave is converted in to dc ahd frequency becomes double (or half im nt sure)
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Sunaina Gupta 8 years ago

The critical angle depends on the index of refraction. The index of refraction can depend on the wavelength (color) of the light; this phenomenon is called dispersion. So yes, in a material with dispersion, the critical angle can depend on color.
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Ayush Yadav 8 years ago

Clear 3 topics and question related to it in a day
Attemp question aur phir ussei related text padh issei ye hoga ki tu jo extra jabardasti ki cheeze likhi hotei hai book mei ussei bach jayega aur time kaam waste hoga
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Preeti Kranti 8 years ago

According to law of conservation of angular momentum,as cat stretches it's body it's moment of inertia increases and therefore angular velocity decreases and therefore cat lands safely to the ground
But as you have asked it under physics i think it may be somehow related to restoring force -kx which may have been produced by the cats muscles
One possible answer acc to me could be As the muscles start moving with each stretch, they also flush out the toxins and waste byproducts that build up during periods of inactivity. For instance, carbon dioxide and lactic acid can accumulate in a cat's body, but stretching can increase blood and lymph circulation, which helps to remove the toxins, hence stretching is all about cleaning the muscles
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Rashi Bari 8 years ago

Ammeter is a device which measures the magnitude of current passing through the circuit it is connected with(series) by showing deflection in the needle. But it itself uses some of the current when passing through it. It results in loss of current and we don't get accurate measures value. An ideal ammeter doesn't use current while working.
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Sharma Saabh 8 years ago

I think you have to prepare the theory as much possible as you can and...do examples along with it.....and dont tryvto cover all syllabus just prepare perfectly some chapters ...
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Aanchal Gupta 8 years ago

As the holes and electrons combine there is a bond formation in which it releases some energy in the formed of photon

Sahiba Bhayana 8 years ago

A semiconductor diode which generates electron hole pair and used for detecting optical signals.It is operated under reverse bias.
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Piyush Kumar 8 years ago

Drift velocity per unit eletric field.

Varun Banda 8 years ago

Carrier mobility in a semiconductor is one of the most important parameters for the operation of electronic devices. Actually, the mobility measures the ability of free carriers (electrons or holes) to move in the material as it is subjected to an external electric field.

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Varun Banda 8 years ago

Photo electric effect is the quantum phenomena of the electro magnetic radiation .

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Varun Banda 8 years ago

The becquerel (symbol: Bq) is the SI derived unit of radioactivity. One becquerel is defined as the activity of a quantity of radioactive material in which one nucleus decays per second.

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Yes. Definitely
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Aditi Shukla 8 years ago

Because the current gain of CE amplifier is more then that of CB amplifier.

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