List of practice Questions

The output stage of a television transmitter is most likely to be a
The electric field intensity $\vec{E}$, due to an electric dipole of moment $\vec{p}$, at a point on the equatorial line is
Radar waves are sent towards a moving airplane and the reflected waves are received. When the airplane is moving towards the radar, the wavelength of the wave
The antenna current of an $AM$ transmitter is $8\,A$ when only the carrier is sent, but it increases to $8.93\,A$ when the carrier is modulated by a single sine wave. Find the percentage modulation.
The correct sequence of base strengths in aqueous solution is
Indicate which one of the following statements is not correct?
(a) Intensities of reflections from different crystallographic planes are equal
(b) According to Bragg's law higher order of reflections have high $\theta$ values for a given wavelength of radiation
(c) For a given wavelength of radiation, there is a smallest distance between the crystallographic planes which can be determined
(d) Bragg's law may predict a reflection from a crystallographic plane to be present but it may be absent due to the crystal symmetry
Ionization power and penetration range of radioactive radiation increases in the order

The orthocentre of the triangle with vertices $O(0, 0), A(0,3/2)$ and $B(-5, 0)$ is

If $\frac {x^2}{36}-\frac{y^2} {k^2} = 1$ is a hyperbola, then which of the following statements can be true ?
If a and b are vectors such that $|a+b|=|a-b|$ then the angle between a and b is
In Raman effect, Stoke's lines are spectral lines having
Angle strain in cyclopropane is
Most favourable condition for ionic bonding are
The value of the integral $\int\limits_0^{\pi/2}$($Sin^{100} x-Cos^{100}x)dx$ is
The equation to two circles which touch the Y-axis at $(0, 3)$ and make an intercept of $8$ units on X-axis are
If $3x + y + k = 0$ is a tangent to the circle $x^2+y^2=10$ the values of k are,
If $sin \, 3 \,\theta\, = \, Sin \, \theta$ , how many solutions exist such that $-2 \pi
Two condensers, one of capacity \(C\) and the other capacity \(\frac{C}{2}\) are connected to a \(V\) -volt battery, as shown in the figure. 
Two condensers
The work done in charging fully both the condensers is
The product formed when hydroxylamine condenses with a carbonyl compound is called
Paracetamol is a/an
In the ionic equation : $BiO _{3}^{-}+6 H ^{+}+ Xe ^{-} \longrightarrow Bi ^{3+}+3 H _{2} O$ the value of $X$ is -
Two satellites of earth, $ S_1 $ and $ S_2 $ , are moving in the same orbit. The mass of $ S_1 $ is four times the mass of $ S_2 $ . Which one of the following statements is true ?
Out of $15$ persons, $10$ can speak Hindi and $8$ can speak English. If two persons are chosen at random, then the probability that one person speaks Hindi only and the other speaks both Hindi and English is
The principle of $LASER$ action involves
Drosophila flies with $XXY$ genotype are females, but human beings with such genotype are abnormal males, it shows that