Physics questions
20027 published questions with worked solutions.
- A plane progressive wave is given by y = 2 cos 2π(330t − x) m. The frequency of the wave is:
- A thin circular disc of mass M and radius R is rotating in a horizontal plane about an axis passing through its centre and...
- Given below are two statements: Statement (I): The mean free path of gas molecules is inversely proportional to square of...
- Two satellite A and B go round a planet in circular orbits having radii 4R and R respectively. If the speed of A is 3v, the speed...
- The angle of projection for a projectile to have same horizontal range and maximum height is:
- Water boils in an electric kettle in 20 minutes after being switched on. Using the same main supply, the length of the heating...
- A capacitor has air as dielectric medium and two conducting plates of area 12 cm² and they are 0.6 cm apart. When a slab of...
- A given object takes n times the time to slide down 45° rough inclined plane as it takes the time to slide down an identical...
- A coil of negligible resistance is connected in series with 90 Ω resistor across 120 V, 60 Hz supply. A voltmeter reads 36 V...
- There are 100 divisions on the circular scale of a screw gauge of pitch 1 mm. With no measuring quantity in between the jaws, the...
- A proton and an electron have the same de Broglie wavelength. If K_p and K_e be the kinetic energies of proton and electron...
- The coercivity of a magnet is 5 × 10³ A/m. The amount of current required to be passed in a solenoid of length 30 cm and the...
- Small water droplets of radius 0.01 mm are formed in the upper atmosphere and falling with a terminal velocity of 10 cm/s. Due to...
- An alternating emf E = 110√2 sin 100t volt is applied to a capacitor of 2μF, the rms value of current in the circuit is ………. mA.
- Two slits are 1 mm apart and the screen is located 1 m away from the slits. A light wavelength 500 nm is used. The width of each...
- An object of mass 0.2 kg executes simple harmonic motion along x axis with frequency of ( 25 ) Hz. At the position x = 0.04 m the...
- A body of mass M thrown horizontally with velocity v from the top of the tower of height H touches the ground at a distance of...
- Match the C_p/C_V ratio for ideal gases with different type of molecules : List-I: (A) Monatomic (B) Diatomic rigid molecules (C)...
- Particle A of mass m_A= m 2 moving along the x-axis with velocity v_0 collides elastically with another particle B at rest having...
- On the x-axis and at a distance x from the origin, the gravitational field due to a mass distribution is given by Ax (x^2+a^2)^...