A river 800 m wide flows at the rate of 5 km/h .A swimmer who can swim at 10 km/h in still water ,wishes to cross the river straight.Find along what direction must he strike ?and what should be his resultant velocity?How much time he would take?

What is the minimum number of coplanner vectors of different magnitude which can give zero resultant?

what is the proper statement for biot savart's law?

what is the dimensional formula of epsilon not?

Derive expression for the maximum speed of a vechile on the banked road . State th factor on which the optimum of speed depend

Draw an equipotential surface due to an electric dipole.

difference between extrinsic and intrinsic semiconductor

Define magnetic elements of earth?

WAT IS RETENTIVITY AND COERCIVITY

REPLY AS FAST AS POSSIBLE

what is the meaning of scattering of light?

A taxi leaves the station X for station Y every 10 minutes. Simultaneously, a taxi leaves the station Y also for station X every 10 minutes. The taxios move at the same constant speed and go from X to Y or vice-versa in 2 hours. How many taxis coming from the other side will each taxi meet enroute from Y to X?

(1) 10

(2) 11

(3) 12

(4) 23

Long Type Questions(3 marks)

what is displacement current????

what is conduction current???

A cylindrical wire is stretched to increase its length by 10%. Calculate the percentage increase in its resistance.

A river 800 m wide flows at the rate of 5 km/h .A swimmer who can swim at 10 km/h in still water ,wishes to cross the river straight.Find along what direction must he strike ?and what should be his resultant velocity?How much time he would take?

What is the minimum number of coplanner vectors of different magnitude which can give zero resultant?

what is the proper statement forbiot savart's law?what is the dimensional formula of epsilon not?

Derive expression for the maximum speed of a vechile on the banked road . State th factor on which the optimum of speed depend

Draw an equipotential surface due to an electric dipole.

difference between extrinsic and intrinsic semiconductor

Define magnetic elements of earth?

WAT IS RETENTIVITY AND COERCIVITY

REPLY AS FAST AS POSSIBLE

what is the meaning of scattering of light?

A taxi leaves the station X for station Y every 10 minutes. Simultaneously, a taxi leaves the station Y also for station X every 10 minutes. The taxios move at the same constant speed and go from X to Y or vice-versa in 2 hours. How many taxis coming from the other side will each taxi meet enroute from Y to X?

(1) 10

(2) 11

(3) 12

(4) 23

Long Type Questions(3 marks)

_{2}and hence derive expression for the energy density of the capacitor._{1}and n_{2}(n_{2}> n_{1}) respectively. Using this diagram, derive the relation.What happens to the focal length of convex lens when it is immersed in water?_{1}, C_{2}and C_{3}are connectedORwhat is displacement current????

what is conduction current???

A cylindrical wire is stretched to increase its length by 10%. Calculate the percentage increase in its resistance.