List of top Questions asked in TS POLYCET

The resistance of human body varies between
The alloy made of Cu, Mn, Ni is
When a person is suffering from both Myopia and Hypermetropia, which should be used ?
The current in a conductor is directly proportional to the potential difference between its ends. This is called____
Focal length of a lens is 25 cm. Its power is___
\(4 \Omega, 8 \Omega, R\) resistors are connected in series. Resultant resistance is \(20 \Omega\). Then \(R=?\)
A convex lens form image of an object at infinity. Object is at
With the help of _____eye-lens changes its focal length.
When how much current flows in the fuse, it melts ?
Focal length of plano-convex lens of refractive index n and radius of curvature R is
Formula used when a light ray enters a medium of refractive index n2 from a medium of refractive index n1 at curved surface with radius of curvature R is
In our eye cones identify
A bird is flying down vertically towards the surface of water with constant speed. A fish in the water vertically below the bird sees the bird
Object distance (u), image distance (v), focal length (f) are all measured from
If a light ray passing through centre of curvature (C) of a mirror is incident on the mirror, the reflected ray's path is
If magnification is equal to one, it means
When distance between object and screen is more than 4 times the focal length, in how many positions of the convex lens, image is sharp ?
If object and image lie on the same side of a mirror, the mirror is
Which part of our eye is responsible for image formation?
An object is placed at a certain distance on the principal axis of a concave mirror. If the image distance (v) is 30 cm and radius of curvature (R) of the mirror is 20 cm, find the object distance (u)
The angle of elevation of the top of a tower, whose height is 100 m, at a point whose distance from the base of the tower is 100 m is
If \(\cot \theta = \frac{b}{a}\) then \(\frac{\cos \theta + \sin \theta}{\cos \theta - \sin \theta}\)=
To find normal to a curved surface at a point, join that point and
The value of \(\frac{1 - \tan^2 45^\circ}{1 + \tan^2 45^\circ}=\)
When a set of parallel rays of light inclined at 15° to the principal axis, are incident on a convex lens, they