Physics questions
20027 published questions with worked solutions.
- A plane electromagnetic wave of frequency 20 MHz travels in free space along the +x direction. At a particular point in space and...
- A concave mirror of focal length f in air is dipped in a liquid of refractive index . Its focal length in the liquid will be :
- A massless spring gets elongated by amount x_1 under a tension of 5N. Its elongation is x_2 under the tension of 7N. For the...
- An air bubble of radius 1.0 mm is observed at a depth of 20 cm below the free surface of a liquid having surface tension 0.095...
- A satellite of mass M 2 is revolving around earth in a circular orbit at a height of R 3 from earth surface. The angular momentum...
- A time varying potential difference is applied between the plates of a parallel plate capacitor of capacitance 2.5 . The...
- In a series LCR circuit, a resistor of 300 , a capacitor of 25 nF and an inductor of 100 mH are used. For maximum current in the...
- Regarding self-inductance : A : The self-inductance of the coil depends on its geometry. B : Self-inductance does not depend on...
- A light hollow cube of side length 10 cm and mass 10g, is floating in water. It is pushed down and released to execute simple...
- A radioactive nucleus n_2 has 3 times the decay constant as compared to the decay constant of another radioactive nucleus n_1. If...
- The position of a particle moving on x-axis is given by x(t) = A t + B ^2 t + Ct^2 + D, where t is time. The dimension of ABC D...
- Match the List-I with List-II List-I: (A) Pressure varies inversely with volume of an ideal gas. (B) Heat absorbed goes partly to...
- Consider a moving coil galvanometer (MCG) : A : The torsional constant in moving coil galvanometer has dimensions [ML²T⁻²] B :...
- A gun fires a lead bullet of temperature 300K into a wooden block. The bullet having melting temperature of 600 K penetrates into...
- What is the lateral shift of a ray refracted through a parallel-sided glass slab of thickness 'h' in terms of the angle of...
- The electric flux is = + where λ and σ are linear and surface charge density, respectively, ( ) represents
- The electric field of an electromagnetic wave in free space is E = 57 [7.5 10^6 t - 5 10^ -3 (3x+4y)](4 i -3 j ) N/C. The...
- A positive ion A and a negative ion B has charges 6.67 10^ -19 C and 9.6 10^ -10 C, and masses 19.2 10^ -27 kg and 9 10^ -27 kg...
- An ideal gas initially at 0ºC temperature, is compressed suddenly to one fourth of its volume. If the ratio of specific heat at...
- A force f = x^2y i +y^2 j acts on a particle in a plane x + y = 10. The work done by this force during a displacement from (0, 0)...