List of practice Questions

The linear momentum of a $3\, MeV$ photon is
The limiting radius ratio for tetrahedral shape is:
The line $\frac {x} {a} + \frac {y} {b} =1$ touches the curve $y = be^{-x/a}$ at the point
The life span of thrombocytes is
The lightest gas which is non-inflammable is
The level of water in a tank is 5m high. A hole of area $1\,cm^2$ is made at the bottom of the tank. The rate of leakage of water from the hole in $m^3/s$ is $(g=10\,ms^{-2})$
The lengths of the tangent drawn from any point on the circle $15x^2 + 15x^2 - 48x +64y = 0$ to the two circles $5x^2 + 5y^2 -24x + 32y +75 = 0$ and $5x^2 + 5y^2 - 48x + 64y +300 = 0$ are in the ratio of
The letters of the word "LABOUR" are permuted in all possible ways and the words thus formed are arranged as in a dictionary the rank of the word "LABOUR" is
The length of the simple pendulum which ticks seconds is
The length of the subtangent to the curve $x^2 + xy + y^2 = 7$ at $ (1, - 3)$ is
The length of the common chord of the two circles $x^2 + y^2 - 4y = 0$ and $x^2 + y^2 - 8x - 4y + 11 = 0$
The length of the perpendicular drawn from the point (3, -1, 11) to the line $\frac{x}{2} = \frac{y-2}{3} = \frac{z-3}{4} $ is :
The length of a solenoid is 0.1m and its diameter is very small. A wire is wound over in two layers. The number of turns in the inner layer is 50 and that on the outer layer is 40. The strength of current flowing in two layers in the same direction is 3 ampere. The magnetic induction in the middle of the solenoid will be
The length of a wire required to manufacture a solenoid of length l and self-induction L is (cross-sectional area is negligible)
The length of a seconds pendulum is
The length of a magnet is large compared to its width and breadth. The time period of its oscillation in a vibration magnetometer is 2 s. The magnet is cut along its length into three equal parts and three parts are then placed on each other with their like poles together. The time period of this combination will be
The length of a microscope is 14 cm and for relaxed eye the magnifying power is 25. The focal length of the eye piece is 5 cm. What is the distance of the object from the objective ?
The least value of 'a' for which $5^{1+x}+5^{1-x},\frac{a}{2},25^x+25^{-x}$ are three consecutive terms of an A.P. is
The length of a conductor is halved. Its conductivity will be
The least random state of $H_2O$ system is
The least value for the common base transistor amplifier is in the case of
The largest term common to the sequences $1, 11, 21, 31,...$to $100$ terms and $31, 36, 41, 46,.....$ to $100 $ terms is
The last element of the third transition series is
The largest invertebrate Architeuthis dux is a
The largest reservoir of nitrogen on Earth is