STANDARD Physics Questions

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

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

Which of the following is correct about magnetic monopole?

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

Alternating current cannot be measured by DC ammeter because

The centre of mass of a body

Which of the following conversions is correct?

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

Which of the following options is true?

Which of the following is unitless quantity?

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?

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

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

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 majority charge carriers in P-type semiconductor are

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

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

Which of the following statements is incorrect?

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

Nucleons are

Ultrasonic waves produced by a vibrating quartz crystal are

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

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

Match column I with column II.

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

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

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

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

Kepler's second law is a consequence of

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

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

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

There is a hole in the middle of a copper plate. When heating the plate, diameter of hole would

The numerical ratio of distance to displacement is

Fluids can develop

Internal energy of an ideal gas depends upon

Pressure at a point inside a liquid does not depend on

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

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

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

Light year is

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

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

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

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?