Physics Mock Te...

One Kwh is equal to

What is the charge on X-rays?

Huygens' wave theory allows us to know

A proton and an electron enter in the uniform magnetic (B) field with velocity (v) at right angle to the magnetic field then which charge experience maximum force?

in Young’s double-slit experiment, using monochromatic light of wavelength λ, the intensity of light at a point on the screen where path difference is λ is K units. The intensity of light at a point where path difference is \(\frac{\lambda }{3}\) is

The resistivity of a material is found to decrease with an increase in temperature. The material is

When electric current is passed through a metallic conductor, amount of heat produced in the conductor depends on its

The current-voltage graph of ohmic devices is of the form:

In Karnataka, the normal domestic power supply AC is 220 V, 50 Hz. Here 220 V and 50 Hz refer to

Find the current in the resistance of 1Ω.

A wire of length 3m is moving with a speed of 50m/s in a direction perpendicular to a magnetic field of 4.5 Wb/m². The  induced emf in the wire is

Diffraction and refraction indicate

The magnetic field at the centre of semi-circular wire carrying current i is

The power factor of a series LCR circuit at resonance is

The electric field intensity at a point due to a point charge depends on the:

Which of the following correctly depicts the magnetic field due to a bar magnet?

Lenz’s law is a consequence of the law of conservation of

Which among the following is not a property of electromagnetic waves ?

Eddy currents are produced when

If a charge on the body is 1 nC, then how many electrons are present on the body?

In the following network potential at ‘O’

Which one of the following conclusions could not be derived from Rutherford's α-particle scattering experiment? 

In case of total internal reflection, the entire light is ______ back into the ______ medium.  

Electric field lines:

If the cell of emf E and the internal resistance r is connected to an external circuit of resistance r, then the potential difference across the cell will be:

The angular magnification of a microscope can be increased ________.

Mutual inductance of two coils can be increased by

In ____________ there is a large gap between the conduction band and the valence band.

A p-n photodiode is fabricated from a semiconductor with a band gap of 2.5 eV. It can detect a signal of wavelength:

If the value of potential in an AC circuit is 30 V, then the peak value of potential is :

In the given figure, the resultant force on the charge -3μC is:

In a double-slit experiment, green light (5303 Å) falls on a double slit having a separation of 19.44 µ-m and a width 4.05 µ-m. The number of bright fringes between the first and the second diffraction minima is

Which of the following statements correctly states Gauss theorem?

Which of the following waves is used for detecting forgery in currency notes?

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

Find the work done (in joules) in moving a charge of 1.6 coulombs across a potential difference of 0.8 V.

The Wi-Fi operates on the ______ frequency.

When a Van de Graaff generator is switched on, and then turned off after after some time. Then

If the work function is 6 eV, then the maximum wavelength of the incident radiation to remove electrons from that metal will be: (h = 6.624 × 10^-34 Js, c = 3 × 10⁸ m/sec)

Permanent magnet can be made by:

Vector form of Biot-savart's law is

What do you mean by doping regarding semiconductors?

The minimum distance between an object and its real image formed by a convex lens is 

The equivalent capacitance of the following arrangement of capacitors is

The angular momentum of the electron orbiting around the nucleus in the n^th orbit is equal to: (All the symbols have their usual meaning)

The torque acting on a dipole moment p placed in an electric field E is 

A magnet of magnetic moment \(50\hat i\;A{m^2}\) is placed along the x-axis in a magnetic field \(\vec B = \left( {0.5\hat i + 3.0\hat j} \right)\) T. The torque acting on the magnet is 

If the far point of an eye is at 4 m, then identify the defect of eye and the lens needed to correct this.

In a convex mirror the image of an object is 1/n times of original. If the focal distance of the mirror is f, then find the object distance–

Two parallel wires 1 m apart carry currents of 1 A and 3 A respectively in opposite directions. The force per unit length acting between these two wires is