Previous Years TS POLYCET Physics Answer Keys
The following mentions the previous year TS POLYCET Physics answer keys along with their questions:-
Q. The focal length of a concave mirror is 20 cm. At what distance the object is placed to obtain the virtual image?
Ans. Less than 20 cm
Q. A convex lens kept in a medium with refractive index less than the refractive index of the lens behaves like
Ans. Converging lens
Q. The focal length of double concave lens having refractive index 1.5 kept in air with two spherical surfaces of radii R 1 = 20 cm and R 2 = 80 cm is
Ans. 32 cm
Q. The current in a conductor is directly proportional to the potential difference between its ends at constant temperature. This is known as
Ans. Ohm’s law
Q. Which law states "the induced current set up in the coil is in such a direction that it opposes the changes in the flux"?
Ans. Lenz's law
