Physics questions
20027 published questions with worked solutions.
- A circular coil having 200 turns, 2.5 × 10⁻⁴ m² area and carrying 100 A current is placed in a uniform magnetic field of 1 T....
- A particle is doing simple harmonic motion of amplitude 0.06 m and time period 3.14 s. The maximum velocity of the particle is...
- Visible light of wavelength 6000 10^ -8 cm falls normally on a single slit and produces a diffraction pattern. It is found that...
- A litre of dry air at STP expands adiabatically to volume of 3 litres. If = 1.40, the work done by air is : (3^ 1.4 = 4.6555)...
- A long solenoid of radius R carries a time (t) – dependent current I(t)=I_0t(1-t). A ring of radius 2R is placed coaxially near...
- A polarizer-analyser set is adjusted such that the intensity of light coming out of the analyser is just 10 % of the original...
- A satellite of mass m is launched vertically upwards with an initial speed u from the surface of the earth. After it reaches...
- A LCR circuit behaves like a damped harmonic oscillator. Comparing it with a physical spring-mass damped oscillator having...
- Consider a circular coil of wire carrying constant current I, forming a magnetic dipole. The magnetic flux through an infinite...
- Speed of a transverse wave on a straight wire (mass 6.0 g, length 60 cm and area of cross-section 1.0 mm ^2) is 90 ms ^ -1 . If...
- If the magnetic field in a plane electromagnetic wave is given by B =3 10^ -8 (1.6 10^3x+48 10^ 10 t) j T, then what will be...
- If we need a magnification of 375 from a compound microscope of tube length 150 mm and an objective of focal length 5 mm, the...
- A 60 HP electric motor lifts an elevator having a maximum total load capacity of 2000 kg. If the frictional force on the elevator...
- The radius of gyration of a uniform rod of length , about an axis passing through a point 4 away from the centre of the rod, and...
- Two moles of an ideal gas with C_P C_V = 5 3 are mixed with 3 moles of another ideal gas with C_P C_V = 4 3 . The value of C_P...
- A beam of electromagnetic radiation of intensity 6.4 10^ -5 W/ cm ^2 is comprised of wavelength, = 310 nm. It falls normally on a...
- A loop ABCDEFA of straight edges has six corner points A(0, 0, 0), B(5, 0, 0), C(5, 5, 0), D(0, 5, 0), E(0, 5, 5) and F(0, 0, 5)....
- A non-isotropic solid metal cube has coefficients of linear expansion as : 5 10^ -5 /ºC along the x-axis and 5 10^ -6 /ºC along...
- A Carnot engine operates between two reservoirs of temperatures 900 K and 300 K. The engine performs 1200 J of work per cycle....
- Consider a uniform rod of mass M = 4m and length pivoted about its centre. A mass m moving with velocity v making angle = 4 to...