List of top Questions asked in TS POLYCET

\(△ABC∼△PQR;\) \(\frac {AB}{PQ}=\frac {BC}{QR}=\frac {AC}{PR}=k\), then \(k\) value
\(△ABC∼△XYZ;\ ∠C=60°;\ ∠B=75°\) then \(∠Z=\) ______.
Which is not a application of the Faraday's law?
Match the following and select correct option:
Group-AGroup-B
(1)DYNAMO rule(A)Gauss
(2)Magnetic field(B)Fleming's right hand rule
(3)Electro magnet(C)Weber
(4)Magnetic flux(D)Microphone
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.
Two metallic wires 'A' and 'B' are having same cross-sectional areas and same current passes through them. Find ratio of drift velocity of electrons in wire 'A' and 'B'.
[electron density of wire A = 8.0×1028m-3 and electron density of wire B = 9.0×1028m-3]
The frequency of direct current is _____ .
The power delivered by a battery of emf 20 V is 40 W. Then the current delivered by the battery is
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.
When two ends of a conductor are connected to terminals of battery, what happens inside conductor?
Which of the following is the formula for magnification of spherical mirror?
If a convex lens is placed in water, its focal length is
The lens which can form real and virtual images is
Unit of power of a lens.
What is the focal length of a double concave lens kept in air with two spherical surfaces of radii \(R_1=30 \ cm,\ R_2=60\ cm\) and refractive index of glass is \(n=1.5\)?
When light passes through the liquids the change of frequency of Scattered light is related to
When objects of different distances are seen which of the following remain constant
If the minimum angle of deviation is 30° with a Prism of angle 60°. Find the refractive index of the material of the Prism.
The relation between the speed of wave (v), wavelength (λ) and frequency (n) is
What is the lens makers formula?
If \(A=\frac {\pi}{4}\), then \((1+tanA) (1+tan^2A) (+tan^3A)=\)
If the angle of elevation of the Sun is 60°, then the ratio of a tree with its shadow is
The lens that is used to rectify hypermetrophia