Physics-
General
Easy
Question
Two stereo speakers are separated by a distance of 2.4 m. A person stands at a distance of 3.2 m as shown directly in front of one of the speakers. The frequencies in audible range for which the listener will hear a minimum sound intensity are (Speed of the sound in air is 320 ms-1 and n is order of minimum)
The correct answer is:
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In the given arrangement, if hanging mass will be changed by 4%, then percentage change in the wave speed in string will be
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A ‘pop’ gun consists a tube 25cm long closed at one end by a cork and the other end by a tightly fitted piston as shown. The piston is pushed slowly in. When the pressure rises to one and half times the atmospheric pressure, the cork is violently blow out. The frequency of the ‘pop’ caused by its ejection is (V = 340m/s)
A ‘pop’ gun consists a tube 25cm long closed at one end by a cork and the other end by a tightly fitted piston as shown. The piston is pushed slowly in. When the pressure rises to one and half times the atmospheric pressure, the cork is violently blow out. The frequency of the ‘pop’ caused by its ejection is (V = 340m/s)
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A source of sound is travelling at 
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A source of sound is travelling at along a road, towards a point A. When the source is 3m away from A, a person standing at a point O on a road perpendicular to the track hears a sound of frequency ‘n ’. The distance of O from A at that time is 4m. If the original frequency is 640 Hz, then the value of n is (given velocity of
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Faraday is equal to :
Faraday is equal to :
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1 Faraday of electricity will liberate 1g atom of the metal from the solution of :
1 Faraday of electricity will liberate 1g atom of the metal from the solution of :
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During electrolysis process of fused CaH2, H2 is liberated at :
During electrolysis process of fused CaH2, H2 is liberated at :
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Assertion (A): Carbon exhibits catenation to maximum extent.
Reason (R): Valency of carbon is 4.
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Reason (R): Valency of carbon is 4.
chemistry-General
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Statement - A :Carbon has two unpaired electrons in its ground state.
Statement - B :Carbon forms 4 covalent bonds in all its compounds.
Statement - C :Carbon exists in ground state in all its compounds.
Statement - A :Carbon has two unpaired electrons in its ground state.
Statement - B :Carbon forms 4 covalent bonds in all its compounds.
Statement - C :Carbon exists in ground state in all its compounds.
chemistry-General
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The end product ‘Z’ in the following reaction, 
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The end product ‘Z’ in the following reaction, is
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Identify Z in 
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Westrosol is
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Consider the given figure showing that possible levels of the energy of 
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It may be easily assumed that the ground state of the molecular hydrogen ion, corresponds to the lowest level which means that
chemistry-General
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Which bond angle 
would result in the maximum dipole moment for the triatomic molecule XY2 as shown below.
Which bond angle would result in the maximum dipole moment for the triatomic molecule XY2 as shown below.
chemistry-General
