List of practice Questions

A charge of 6 C is flowing through a point in a circuit for 2 minutes. The current in the circuit is
The resistance of a wire of length 1 m and cross-sectional area 1 mm2 is 1Ω. The specific resistance is
Pick the correct answer from the following two staternents :
(a) Kirchhoff's junction law is based on conservation of charge
(b) Kirchhoff's loop law is based on conservation of energy.
The relation between the potential difference and current is established by the scientist
\(\frac{6J}{2C}=\)
The sum of two resistors is 6Ω and their equivalent resistance when connected in parallel is 1.5Ω. The product of the two resistances is
The sun does not appear red during noon hours. Because
If i1 and i2 are the angle of incidence and angle of emergence respectively, then at the angle of minimum deviation
Pick the correct answer from the following two statements:
(a) Myopia in also called near sightedness.
(b) Hypermetropia is also called far sightedness
When an object is placed at distance of 5 cm from a human eye, the image is formed at distance of
A lens having two spherical surfaces, curved inwards, is called
A convex lens forms a virtual image when the object is placed between focus and optic centre. The size of the image as compared to the object is
The area of the triangle formed by (-1, 2), (2, -1) and (0, 0) is
On which of the following factors does the focal length of lens depend?
Which among the following materials has higher refractive index?
The midpoint of line segment joining (x, y) and (-7, 5) is (4, 6). Then x=,y=
The points A(a, 2), B(3, 1), C(-1, 3) do not form a triangle if a=
If the points A(5, 3), B(8, 5), C(x, y) and D(7, 2) are consecutive vertices of a parallelogram then (x, y) = A(5, 3), B(8, 5), C(x, y)=
In an AP the 5th term is 24 and 12th term is 94, then the sum of first 20 terms is
The roots of a quadratic equation are irrational. Then
Sum of the squares of two consecutive even positive integers is 340. The numbers are
If the difference of reciprocals of ages of a boy three years ago and five years from now is then the present age of the boy in years is
\(f(x)=5x^4-9x^3-3x^2+11x-18\) is divided by \((x-2)\) then the remainder is
If the solutions of ax + by = 2 and bx+y=5 are 4, 6 then a =
A ball is thrown from the top of a building of height 25 m with an initial velocity of 15 m/sec. If the height of the ball h from ground at any point of time t is given by \(h=25+10t-3t^2\). The time taken by the ball to reach the ground is