List of top Physics Questions

If the kinetic energy decreases by 49%, what is the percentage change in speed?
Which of the following obeys Ohm's law?
A 5 kg block is placed on a horizontal surface. A force of 10 N is applied to the block. The coefficient of friction between the block and the surface is 0.2. Find the acceleration of the block.
The resistors 2\(\Omega\), 4\(\Omega\) and 6\(\Omega\) are connected in series. The equivalent resistance is:
The current in a wire depends on:
Solenoid behaves like a when current passes through it.
There is no accumulation of electric charges at any junction in an electric circuit. Which law states this?
Which of the following mirrors is used by a dentist to examine a patient's teeth?
The geometric center of a spherical mirror is called:
If the radius of curvature of a spherical mirror is 16 cm, then the focal length of the mirror is:
The SI unit of resistivity is:
How many times does a ray of light refract when it passes through a prism?
Which of the following is used in household circuits to prevent damages due to overloading?
We get a diminished image with a concave mirror when the object is placed:
Lenz's law explains about:
The formula for power of a lens is:
The lens used to correct myopia is:
Which law indicates this relation?
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Electric motor converts:
The shape of the magnetic field lines around a straight wire carrying current is:
The force on a current-carrying conductor placed in a magnetic field becomes zero, when it is:
Which of the following is constant throughout a uniform magnetic field?
A watch repairer uses a magnifying glass to see the tiny parts of a watch. Which of the following lenses is used?
A prism is made with a material of refractive index \( \mu = 2 \). The angle of prism is 60°. The angle of minimum deviation produced by the prism is:
An air bubble in water behaves like: