STANDARD Physics Questions

The current in a wire varies with time according to the equation I = 4 + 2t, where I is in ampere and t is in second. The quantity of charge which has to be passed through a cross-section of the wire during the time t = 2 s to t = 6 s is

Match column I with column II.

Which one of the following is not correct about Lorentz Force?

Which of the following is unitless quantity?

The temperature which has same numerical value on Celsius and Fahrenheit scale is

Which of the following statements is incorrect?

"Two systems in thermal equilibrium with a third system separately are in thermal equilibrium with each other." This statement is

Which of the following is correct about magnetic monopole?

In a Geiger-Marsden experiment. Find the distance of closest approach to the nucleus of a 7.7 MeV α-particle before it comes momentarily to rest and reverses its direction. (Z for gold nucleus = 79)

The centre of mass of a body

Inertia is that property of a body by virtue of which the body is

Alternating current cannot be measured by DC ammeter because

Which of the following options is true?

Ultrasonic waves produced by a vibrating quartz crystal are

This question contains Statement-1 and Statement-2 of the four choices given after the statements, choose the one that best describes the two statements. Statement-1: For a charged particle moving from point P to point Q, the net work done by an electrostatic field on the particle is independent of the path connecting point P to point Q. Statement-2: The net work done by a conservative force on an object moving along a closed loop is zero.

Which of the following orbits is a possible orbit for a planet?

If A = î + 2ĵ - k̂, B = -î + ĵ - 2k̂, then angle between A and B is

The (x, y, z) coordinates of two points A and B are given respectively as (0, 4, −2) and (−2, 8, −4). The displacement vector from A to B is

Nucleons are

A cup contains 250 g of water. Find the total positive charge present in the cup of water.

Out of the following representing motion of a particle which represents SHM? 1. x = sin³ωt 2. x = 1 + ωt + ω²t² 3. x = cosωt + cos3ωt + cos5ωt 4. x = sinωt + cosωt

Wavefront is the locus of all points, where the particles of the medium vibrate with the same

Displacement current goes through the gap between the plates of a capacitor when the charge on the capacitor

The majority charge carriers in P-type semiconductor are

The number of images formed by the lens, if an object is placed on the axis of the lens is:

Which of the following conversions is correct?

The magnetic flux linked with a coil of N turns of area of cross section A held with its plane parallel to the field B is

Which of the following is not a characteristic of simple harmonic motion?

Pressure at a point inside a liquid does not depend on

The equation of a progressive wave is given by: y = 5 sin(100 πt − 0.4πx) where y and x are in m and t is in s. (1) The amplitude of the wave is 5 m. (2) The wavelength of the wave is 5 m. (3) The frequency of the wave is 50 Hz. (4) The velocity of the wave is 250 m s⁻¹. Which of the following statements are correct?

A person moves 30m north, then 30m east, then 30√2m south-west. His displacement from the original position is

Fluids can develop

In the Geiger-Marsden scattering experiment the number of scattered particles detected are maximum and minimum at the scattering angles respectively at

A 100 Ω resistor is connected to a 220 V, 50 Hz ac supply. The rms value of current in the circuit is

The charge on a parallel plate capacitor varies as q = q₀ cos 2πνt. The plates are very large and close together (area = A, separation = d). The displacement current through the capacitor is

Which of the following is not correct about the magnetic field lines?

The phenomena which is not explained by Huygen's construction of wavefront

A circular loop of radius R carrying a current I is placed in a uniform magnetic field B perpendicular to the loop. The force on the loop is

An air bubble of volume 1.0 cm³ rises from the bottom of a lake 40 m deep at a temperature of 12°C. To what volume does it grow when it reaches the surface which is at a temperature of 35°C?

The set which represents the isotope, isobar and isotone respectively is

The numerical ratio of distance to displacement is

Internal energy of an ideal gas depends upon

In an atom electrons revolves around the nucleus along a path of radius 0.72 Å making 9.4 × 10¹⁸ revolution per second. The equivalent current is (e = 1.6 × 10⁻¹⁹)

Three particles of masses 1 kg, \( \frac{3}{2} \) kg, and 2 kg are located at the vertices of an equilateral triangle of side a. The x, y coordinates of the centre of mass are

The electric field and the potential of an electric dipole vary with distance r as

Which is the correct form of the graph of angle of incidence vs angle of deviation for a triangular prism during the parallax method?

When a speeding bus stops suddenly, passengers are thrown forward from their seats because

Light year is

Kepler's second law is a consequence of

The number of electrons that must be removed from an electrically neutral silver dollar to give it a charge of +2.4 C is