Maths-
General
Easy
Question
Let AC be an arc of a circle, subtending a right angle at the centre O. The point B divides the arc AC in the ratio 1:2 If 
then calculate 
in terms of 
The correct answer is:
Given that 
are coplanar, then 
can be written as the linear combination of two non-collinear vectors 
Let 
be taken along x and y axes respectively, and 
(radius). Clearly, we can say
Related Questions to study
maths-
Let 
be the equation of an ellipse in the xy-plane. A and B are two points whose position vectors are 
then the position vector of a point P on the ellipse such that 
is
Let be the equation of an ellipse in the xy-plane. A and B are two points whose position vectors are then the position vector of a point P on the ellipse such that is
maths-General
maths-
A man travelling east at 8km/h finds that the wind seems to blow directly from the north. On doubling the speed, he finds that it appears to come from the north-east. The velocity of the wind is
A man travelling east at 8km/h finds that the wind seems to blow directly from the north. On doubling the speed, he finds that it appears to come from the north-east. The velocity of the wind is
maths-General
physics-
A disc of radius R = 2m moves as shown in the figure, with a velocity of translation of 
of its centre of mass and an angular velocity of 
. The distance (in m) of instantaneous axis of rotation from its centre of mass is
A disc of radius R = 2m moves as shown in the figure, with a velocity of translation of of its centre of mass and an angular velocity of . The distance (in m) of instantaneous axis of rotation from its centre of mass is
physics-General
biology
A plant of type ‘H’ will produce seeds with the genotype identical to seeds produced by the plants of
A plant of type ‘H’ will produce seeds with the genotype identical to seeds produced by the plants of
biologyGeneral
biology
Female gametes In the Punnet square given above, the genotype of the female parents and male parents respectively.
Female gametes In the Punnet square given above, the genotype of the female parents and male parents respectively.
biologyGeneral
chemistry-
Phenol 
Name of the above reaction is
Phenol Name of the above reaction is
chemistry-General
chemistry-
The product ‘A’ in the following reaction is
The product ‘A’ in the following reaction is
chemistry-General
chemistry-
Which will undergo a Friedel-Craft's alkylation reaction
Which will undergo a Friedel-Craft's alkylation reaction
chemistry-General
chemistry-
Sp. vol. of cylindrical virus particle is 
. Whose radius and length are 
respectively. If 
. Find mol. wt. of uirus -
Sp. vol. of cylindrical virus particle is . Whose radius and length are respectively. If . Find mol. wt. of uirus -
chemistry-General
chemistry-
chemistry-General
chemistry-
Which of the following reaction is correctly represented
Which of the following reaction is correctly represented
chemistry-General
chemistry-
A 0.200 M KOH solutions is electrolyzed for 1.5 h using a current of 8.00 A How many moles of O2 were produced at the anode?
A 0.200 M KOH solutions is electrolyzed for 1.5 h using a current of 8.00 A How many moles of O2 were produced at the anode?
chemistry-General
chemistry-
Electrolysis involves electronation and de-electronation at the respective electrodes Anode of electrolytic cell is the electrode at which de-electronation takes place whereas at cathode electronation is noticed If two or more ions of same charge are to be electonated or de electronated, the ion having laser discharge potential is discharged Discharge potential of anion refers for E0OP of E0RP as the case may be The products formed at either electrode is given in terms of Faraday's laws of electrolysis i.e. 
During electrolysis of CuSO4(aq), the pH of solution becomes
Electrolysis involves electronation and de-electronation at the respective electrodes Anode of electrolytic cell is the electrode at which de-electronation takes place whereas at cathode electronation is noticed If two or more ions of same charge are to be electonated or de electronated, the ion having laser discharge potential is discharged Discharge potential of anion refers for E0OP of E0RP as the case may be The products formed at either electrode is given in terms of Faraday's laws of electrolysis i.e. During electrolysis of CuSO4(aq), the pH of solution becomes
chemistry-General
chemistry-
Conductors allow the passage of electric current through them Metallic and electrolytic are the two types of conductors Current carriers in metallic and electrolytic conductors are free electrons and free ions respectively Specific conductance of conductivity of the electrolyte solution is given by the following relation :
where, M and N are the molarity and normality of the solution respectively. Molar conductance of storage electrolyte depends on concentration : 
where, 
molar conductance at infinite dilution
c= concentration of the solution b= constant
The degrees of dissociation of weak electrolytes are calculated as: 
For which of the following electrolytic solution 
and 
are equal ?
Conductors allow the passage of electric current through them Metallic and electrolytic are the two types of conductors Current carriers in metallic and electrolytic conductors are free electrons and free ions respectively Specific conductance of conductivity of the electrolyte solution is given by the following relation :
where, M and N are the molarity and normality of the solution respectively. Molar conductance of storage electrolyte depends on concentration : where, molar conductance at infinite dilution
c= concentration of the solution b= constant
The degrees of dissociation of weak electrolytes are calculated as:
For which of the following electrolytic solution and are equal ?
chemistry-General
chemistry-
A Galvanic cell consists of three compartments as shown in figure The first compartment contains ZnSO4 (1M) and III compartment contains CuSO4 (1M) The mid compartment contain NaNO3(M) Each compartment contains 1L solution:
The concentration of 
ion in III compartment after discharge of 0.1 F charge will be :
A Galvanic cell consists of three compartments as shown in figure The first compartment contains ZnSO4 (1M) and III compartment contains CuSO4 (1M) The mid compartment contain NaNO3(M) Each compartment contains 1L solution:
The concentration of ion in III compartment after discharge of 0.1 F charge will be :
chemistry-General
