List of practice Questions

A mirror forms a virtual and diminished image. It is a :
Blue colour of sky is due to :
Focal length of a plane mirror is :
Myopia is corrected by using :
Speed of light in vacuum is:
The cause of twinkling of stars is:
An electromagnet is :
At the time of short circuit, the current in the circuit is :
Strength of magnetic field produced by a current carrying solenoid depends upon :
The device used for producing electric current is called:
The north and south poles of a magnet:
Which one is not true for magnetic field lines ?
Electric current produces :
If a line segment joining the points P and Q $(3, -4)$ is bisected at origin, then the coordinates of P are :
A ladder is placed against a wall such that its foot is at a distance of 2.5 m from the wall and its top reaches 6 m above the ground. Then the length of the ladder is:
If 2k, 3k-1, 8 are in A.P. Then the value of k is :
If $x^2-5x+1=0$, then $\left(x+\frac{1}{x}\right)$ will be equal to :
In a right triangle, the square of the hypotenuse is equal to the ………… of the square of the other two sides.
The sum of first 5 multiples of 3 is :
The value of $ k $ for which the equations $ 6x - 2y = 3 $ and $ kx - y = 2 $ have infinitely many solutions is:
What is the sum of first n natural numbers ?
H.C.F. of 85 and 119 can be expressed in the form of $85x-153$. Value of $x$ is :
If $3x = a + b + c$, then the value of $[(x-a)^3+(x-b)^3+(x-c)^3-3(x-a)(x-b)(x-c)]$ is :
If $ \alpha $ and $ \beta $ are the zeros of the polynomial, such that $ \alpha + \beta = 6 $ and $ \alpha \beta = 4 $, then the quadratic polynomial is:
If $ \ell $ is the length of a diagonal of a cube of volume $ V $, then: