Physics questions
20027 published questions with worked solutions.
- A series LCR circuit with R=20Ω, L=1.6H and C=40μF is connected to a variable frequency a.c. source. The inductive reactance at...
- When an external resistance of 5Ω is connected across terminals of a cell, a current of 0.25 A flows through it. When the 5Ω...
- A circular loop of radius 20 cm and resistance 2Ω is placed in a time varying magnetic field B=(2t^2+2t+3) T. At t=0, for the...
- In a Vernier calipers, when both jaws touch each other, zero of the Vernier scale is shifted to the right of zero of the main...
- L, C and R represents physical quantities inductance, capacitance and resistance respectively. The dimensional formula ML²T⁻⁴A⁻²...
- When one moves from a point 16 km below the earth's surface to a point 16 km above the earth's surface. The change in g is...
- The Young's modulus of steel wire of radius r and length L is Y. If the radius r and length L of the wire are doubled then the...
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Statement I: Change in...
- An electron of mass m is moving in an electric field E=-2E_0 i (E₀=constant>0), with an initial velocity V=v_0 i (v₀=constant>0)....
- In the hydrogen atom, the electron makes a transition from the higher orbit (i) to a lower orbit (f). The ratio of the radius of...
- A displacement current of 4.0 A can be set up in the space between two parallel plates of 6 μF capacitor. The rate of change of...
- In Young's double slit experiment, the fringe width of the interference pattern produced on the screen is 2.4 μm. If the...
- A ray of light passing through an equilateral prism is having velocity 2.12×10⁸ m/s in the prism material, then the minimum angle...
- Light source having wavelength 331 nm is used to generate photo-electrons whose stopping potential is 0.2 V. The work function of...
- A compound microscope is designed with two symmetric biconvex lenses. The objective lens is cut vertically, creating two...
- An a.c. source of angular frequency ω is connected across a resistor R and a capacitor C in series. The current is observed as I....
- A cube has side length 5 cm and modulus of rigidity 10⁵ N/m². The displacement produced by a force of 10 N in the upper face of...
- From 18 m height above the ground a ball is dropped from rest. The height above the ground at which the magnitude of velocity...
- A transverse wave on a string is described by y=3sin(36t+0.018x+π/4), where x,y are in cm and t in seconds. The least distance...
- The charged particle moving in a uniform magnetic field of (3î+2ĵ) T has an acceleration (4 i- x2 j ) m/s². The value of x is...