New Concepts/Shortcuts 17

Question 1

whats wattless current

Answer 1

Question 2

electric dipole time period formula

Answer 2

Question 3

what should be kept in mind for such sums to find the graphs of the field

Answer 3

if we have a negative graph in option for field

choose that

if no then choose the positive one

Question 3

the metalloids list

Answer 3

Question 4

melting point generally increases/decreases down the grp

Answer 4

melting point generally increases down the grp

Question 5

least reducing grp 1 element

Answer 5

Na

Question 6

effective gravity in water and of object with given density

Answer 6

Question 7

diseases caused by SO2

Answer 7

asthma
asphyxiation
bronchitis

Question 8

temperature dependency with viscosity of liquids and gases

Answer 8

Question 9

field formula and graph for solid sphere

Answer 9

Question 10

the potential of the ring at a distance x from the the axis of the ring

Answer 10

Question 11

V due to solid sphere formula and graph

Answer 11

Question 12

variation of g with rotation

Answer 12

Question 13

the analogy of rods that are expanding with spring

Answer 13

Question 14

force on side wall containing fluids

Answer 14

Question 15

variation of body temperature as per newton’s law graph

Answer 15

Question 16

weins displacement law formula and graph

Answer 16

Question 17

time taken by the vessel to be emptied

Answer 17

Question 18

velocity of SHM at a given displacement

Answer 18

Question 19

combination of springs concept

Answer 19

Question 20

time period of a SHM in tunnel in a earth

Answer 20

Question 21

SHM of charge in between two charges if displaced in vertical or horizontal way?

Answer 21

Question 22

physical pendulum formula

Answer 22

Question 23

time period of magnetic and electric dipole in a field

Answer 23

Question 24

equivalent thermal conductivity formula/concept

Answer 24

Question 25

adiabatic graphs with PV,PT,VT

Answer 25

Question 26

wave speed formula of a sinusoidal wave

Answer 26

Question 27

shortcut for finding the ratio a line segment with two points given is divided by a line

Answer 27

Question 28

sinA/a = formula

Answer 28

Question 29

Answer 29

Question 30

Answer 30

Question 31

the distance between focus and directrix of parabola is

Answer 31

Question 31

Euler form of cube roots of unity

Answer 31

Question 32

conclusions to be drawn from this

Answer 32

Question 33

Answer 33

Question 33

Answer 33

Question 34

n21 in other form (refractive index)

Answer 34

Question 35

a solid sphere is rotating in free space. If the radius of the sphere is increased keeping the mass same which one of the following will not be affected

angular velocity
angular momentum
moment of inertia
rotational kinetic energy

Answer 35

angular momentum

Question 36

the temporary hardness of water due to calcium bicarbonate can be removed by adding?

Answer 36

Ca(OH)2

Question 37

whats loop law in vectors?!

Answer 37

consider a direction of going in the circle and the vectors in its direction are positive and the one against it is negative