List of practice Questions

P: The magnetic field lines always start from north pole.
Q: The magnetic field lines are open loops.
If force acting on current carrying conductor inside a magnetic field is \(F=\frac {IlB}{\sqrt 2}\). Find the angle between plane of conductor and magnetic field intensity direction.
In an AC generator direction of current changes because of _____ .
Three conductors having resistance values 2 ohm, 3 ohm and 4 ohm are connected in parallel. Find equivalent resistance.
A bag contains 6 red balls, 12 green balls and 8 black balls. Find the probability that the ball drawn is either a black or a red ball.
If the angle of elevation of the Sun is 60°, then the ratio of a tree with its shadow is
If \(A=\frac {\pi}{4}\), then \((1+tanA) (1+tan^2A) (+tan^3A)=\)
The median of the marks scored by 100 students in a 25 marks Unit test is
Marks0-55-1010-1515-2020-25
No. of students101842137
If a coin is tossed 3 times, then the probability of getting at least one head is
If A = 45°, B = 60° then sin A+ cos B
If A, B, C, D are angles of a cyclic quadrilateral, then sin A + sin B - sin C - sin D =?
If two dice are rolled simultaneously then the probability that the numbers on them are different is
To find out the slant height of a cone, we use ______ Theorem.
The radius of the sphere is increased by 100%, the volume of the resulting sphere is increased by
1 radian= _____ .
In the figure x= _____ .
In the figure x
In the figure, \(∠ACB\)_____ .
In the figure,∠ACB
A line which intersects the given circle at two distinct points is called
Angle in a major segment is
The ratio of the corresponding sides of two similar triangles is 5:3 then the ratio of their areas
From the figure x= _____ .
From the figure x=
\(△ABC∼△PQR\), then \(y+z =\) ______ .
△ABC∼△PQR then y+z =__.
Product of the roots of \(\sqrt 3x^2-2x-\sqrt 3=0\) is
\(\frac {x}{2019}+\frac {y}{2020}=2, \frac {2x}{2019}-\frac {y}{2020}=1\), \(∴(x, y)=\)
\(x+y=\sqrt 3, x-y=0,\) then \(x=\)