List of top Physics Questions

At constant volume, temperature is increased. Then:
For a hollow cylinder and a solid cylinder rolling without slipping on an inclined plane, then which of these reaches earlier
A (100 W, 200V) bulb is connected to a to V power supply. The power consumption would be:
12. If the binding energy per nucleon in $ L{{i}^{7}} $ and $ H{{e}^{4}} $ nuclei are respectively 5.60 MeV and 7.06 MeV, then energy of reaction $ L{{i}^{7}}+p\xrightarrow{{}}2\,{{\,}_{2}}H{{e}^{4}} $ is:
In a double slit experiment instead of taking slits of equal widths, one slit is made twice as wide as the other, then in the interference pattern
A spring of force constant $k$ is cut into two pieces such that one piece is double the length of the other. Then the long piece will have a force constant of
Wavelength of light of frequency 100 Hz
Four particles of masses m, 2m, 3m and 4m are arranged at the corners of a parallelogram with each side equal to a and one of the angle between two adjacent sides as $ 60{}^\circ $ . The parallelogram lies in the $ x-y $ plane with mass m at the origin and 4m on the $ x- $ axis. The centre of mass of the arrangement will be located at
The escape velocity of a sphere of mass m is given by (G = Universal gravitational constant; M = Mass of the earth and R = Radius of the e earth)
A 10kg body hangs at rest from a rope wrapped around a cylinder of 0.2 m in diameter. The torque applied about the horizontal axis of the cylinder is:
If a unit vector is represented by $ 0.5 \widehat{ i} - 0 . 8 \widehat{j} + c \widehat{k}$ then the value of c is
A mirror forms a real image of unit magnification. Its nature is
There are two liquid drops of different radii. The excess pressure inside over the outside is:
A concave lens of glass, refractive index 1.5 has both surfaces of same radius of curvature R. On immersion in a medium of refractive index 1.75, it will behave as a
Yellow light is used in a single slit diffraction experiment with slit width of 0.6 mm. If yellow light is replaced by X-rays, then the observed pattern will reveal
A body is sliding on a smooth inclined plane requires 4 second to reach the bottom starting from rest at the top. How much rime does it take to cover $ \frac{1}{4} $ the distance starting from rest?
A photocell stops emission if it is maintained at 2 V positive potential. The energy of most energetic photoelectron is:
A bullet of mass 50 g is fired from a 5 kg gun with a velocity of 1 km/sec. The speed of recoil of the gun is:
Two spheres made of same substance have diameters in the ratio 1 : 2. Their thermal capacities are in the ratio of:
A straight wire of diameter 0.5 mm carrying a current of 1 A is replaced by the another wire of 1 mm diameter carrying the same current. The strength of the magnetic field far away is
The current in the given circuit is
If a diamagnetic substance is brought near the north or the south pole of a bar magnet, it is
A $ 500 \,kg $ car takes a round turn of radius $ 50\, m $ with a velocity of $ 36\, km/h $ . The centripetal force is
Colours appear on a thin soap film and on soap bubbles due to the phenomenon of
Depletion layer consists of