List of top Physics Questions asked in Jharkhand Polytechnic

The relationship between the radius of curvature R and focal length f of a spherical mirror of small aperture could be represented as:
A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top:
An object placed at a distance of +15 cm is slowly moved towards the pole of a convex mirror. The image will get
Consider the statements given below and choose the correct option :
Statement 1 : Angle of deviation produced by a prism depends on the angle of the prism.
Statement 2 : Dispersion takes place in a prism because the refractive index of the refracting medium is different for different wavelengths.
A light ray travels obliquely from a denser medium to a rarer medium. It will bend:
In domestic Indian house, the values of AC electrical power and frequency we receive are __________.
In case of a concave mirror, a ray parallel to the principal axis after reflection will
Which mirror is used by a dentist to examine a small cavity?
A point on the principal axis of a spherical mirror where rays parallel to the principal axis after reflection meet or appear to meet is known as:
Which of the following is NOT generally used for electrical transmission lines?
Which of the following devices does NOT use magnetic effect of electric current?
What happens to the deflection of the compass needle when it is moved away from a copper wire carrying a constant current?
The region surrounding a magnet, where the magnetic force can be detected, is said to have
Magnetic field inside a current-carrying long solenoid
Alloys are commonly used in electrical heating devices like toaster, electric iron because:
A cooler of 1500 W, 200 volt and a fan of 500 W, 200 volt are to be used from a household supply. The rating of fuse to be used is:
A 100 watt, 220 volt lamp takes a current of
The pattern of the magnetic field produced by the straight current carrying conducting wire is:
Which of the following is true when resistors are connected in series?
When several resistors are connected in parallel in a circuit, what happens to the current and the equivalent resistance?
Find the correct statement from following :
In Joule's law of heating, the heat produced is directly proportional to which factor when the current remains constant?
A coil in the heater consume power P on passing current. If it is cut into halves and joined in parallel, it will consume power:
The resistivity of a conductor of 5 metre length is \(1.84 \times 10^{-6}\ \Omega\text{ m}\). What will be the resistivity of the conductor of 10 metre length and same diameter of same material provided that all other physical conditions remain same?
On which factor the resistance of a conductor does not depend?