Physics questions
20027 published questions with worked solutions.
- The relation between time 't' and distance 'x' is t = αx² + βx, where α and β are constants. The relation between acceleration...
- A force is represented by F = ax² + bt^ 1/2 . Where x = distance and t = time. The dimensions of b²/a are :
- The parameter that remains the same for molecules of all gases at a given temperature is :
- The refractive index of a prism with apex angle A is cot(A/2). The angle of minimum deviation is :
- The fundamental frequency of a closed organ pipe is equal to the first overtone frequency of an open organ pipe. If length of the...
- A coin is placed on a disc. The coefficient of friction between the coin and the disc is μ. If the distance of the coin from the...
- An artillery piece of mass M₁ fires a shell of mass M₂ horizontally. Instantaneously after the firing, the ratio of kinetic...
- A coil is places perpendicular to a magnetic field of 5000 T. When the field is changed to 3000 T in 2 s, an induced emf of 22 V...
- If the wavelength of the first member of Lyman series of hydrogen is λ. The wavelength of the second member will be
- Two conductors have the same resistances at 0°C but their temperature coefficients of resistance are α₁ and α₂. The respective...
- If the percentage errors in measuring the length and the diameter of a wire are 0.1% each. The percentage error in measuring its...
- An electron moves through a uniform magnetic field B = B_0 i + 2B_0 j T. At a particular instant of time, the velocity of...
- The depth below the surface of sea to which a rubber ball be taken so as to decrease its volume by 0.02% is ________ m. (Take...
- A body starts falling freely from height H hits an inclined plane in its path at height h. As a result of this perfectly elastic...
- A particle performs simple harmonic motion with amplitude A. Its speed is increased to three times at an instant when its...
- A small square loop of wire of side ℓ is placed inside a large square loop of wire of side L (L = ℓ²). The loops are coplanar and...
- A solid circular disc of mass 50 kg rolls along a horizontal floor so that its center of mass has speed of 0.4 m/s. The absolute...
- A parallel plate capacitor with plate separation 5 mm is charged up by a battery. It is found that on introducing a dielectric...
- Two waves of intensity ratio 1 : 9 cross each other at a point. The resultant intensities at that point, when (a) Waves are...
- The temperature of an ideal gas in 3-dimensions is 300 K. The corresponding de-Broglie wavelength of the electron approximately...