Physics Mock Te...

The angle between the magnetic meridian and geographic meridian is known as:

A concave mirror having a radius of curvature 40 cm is placed in front of an illuminated point source at a distance of 30 cm from it. Find the location of the image.

In the given figure, which of the diodes are forward biased?

1. 

2. 

3. 

4. 

5. 

Numerical values of the momentum and kinetic energy of a particle are equal. Velocity of the particle is: 

Consider the following the statements

1. Meter bridge works on the principal of the Wheatstone bridge.

2. A Meter bridge is used to find the unknown resistance.

3. A meter bridge is used to find the internal resistance of the battery.

Which of the following statement is INCORRECT?

The potential energy of two non-zero point charges is assumed to be zero when they are at an infinite distance apart. The potential energy of these two point charges when they are at a finite distance is:

The appearance of Sun is ____________ at sunrise and sunset.

Nuclides having the same atomic and mass numbers are known as:

Pick the incorrect statement from the following

When the frequency applied to a series LRC circuit is increased, the impedance of the circuit:

The angle between the electric field due to dipole on its axial line and the equatorial line is:

The phase difference in electric and magnetic force fields of an electromagnetic wave is-

In the given circuit, assuming point A to be at zero potential, use Kirchhoff’s rules to determine the potential at point B.

The electric field intensity at a point due to a uniformly charged infinite plane sheet depends on the:

When the current flowing in a circular coil is doubled and the number of turns in it is halved, the magnetic field at its center will become - 

Which among the following statements is true about Huygen's principle

The magnifying powers of objective lens and eyepiece lens of a compound microscope are 10 and 20 respectively. Its resultant magnifying power will be

The magnetic flux linked with a coil in weber is given by the equation ϕ = 6t² + 3t + 2. Then the magnitude of induced emf in the coil at t = 3 sec will be:

In a common emitter amplifier the input signal is applied across

The particle required to continue the chain process of Uranium fission is ________

Ohm's law is not valid when

The wave nature of electrons was first proved by whom?

A rectangular current carrying loop is placed in a uniform magnetic field of magnitude B. The angle between the plane perpendicular to the coil and the magnetic field is θ. The current in the loop is I. Then the torque on the rectangular loop will be-

The following graph shows variation of total energy U stored in a capacitor against the value of its capacitance C. Which of the following parameter is constant?

What are the limitations of Rutherford’s model of an atom-?

Why amplification of a signal is necessary in a communication system?

Nucleus of He is revolving in circular orbit of radius 0.8 m. It completes a circle in 2 seconds, then the magnetic induction at the centre of circle is:

The ratio of the number of turns in secondary and primary coils of a step up transformer is 4 : 1. If the current in the primary coil is 4 amp. The current in the secondary coil is:

Current in a coil changes from 4 A to zero in 0.1 second and the emf induced is 100 V. The self inductance of the coil is

Nature of which of the following rays is not electromagnetic?

To obtain an enlarged real inverted image beyond 2F₂ after refraction by convex lens, where should the object be placed?

The four equal charge particles of charge q are placed at the corners of a square of side a. Find the net electrostatic force on any one charge particle (Here K = 1/(4π ϵ₀)).

Relation between the net magnetic field strength (B), magentisation (M), and magnetic intensity (H) in a current carrying solenoid is is given by

A sinusoidal voltage V(t) = 200 sinωt is applied to a series LCR circuit with L = 10 mH, C = 100 nF and R = 20 Ω. Find the amplitude of current at resonance

Which of the following is the infrared wavelength:

Which of the following is/are true?

Which of the following statement is correct, when the length of a wire is increased by keeping the cross-sectional area constant.

A uniform electric field in the plane of the paper as shown. Here A, B, C, D are the points on the circle V₁, V₂, V₃, V₄ are the potential at those points respectively. Then

The relationship between conductivity σ and resistivity ρ of a material is

If the the amplitude of the modulating signal is greater than the amplitude of the carrier wave, then what will happen with the modulated signal?

Two coherent sources of intensity ratio 25 ∶ 9 are used in an interference experiment. The ratio of intensities of maxima and minima in the interference pattern is:  

In a PNP transistor working as a common-base amplifier, current gain is 0.92 and emitter current is 6  mA. The base current is

Magnetism at the center of a bar magnet is ______?

Unpolarized light in air falls on water surface (refractive index = 1.33) and achieves maximum polarization. The angle of incidence is

In the below circuit the outputs are

A proton is moving at a speed of 5.0 × 10⁴ m/s. The de Broglie wavelength associated with it is _____.

(m_p = 1.67 × 10^-27 kg, h = 6.63 × 10^-34 J s)

Which type of behaviour is shown by a pure Germanium at absolute zero temperature?

In the potentiometer arrangement, a cell has a balancing point at 30 cm length of wire whose emf is 1.5V. If the cell is replaced by another cell, the balancing point shifts to 60 cm. What is the emf of the replaced cell?

Light of wavelength 600 nm is incident normally on the slit of width 2 mm. What will be the angular width of central maxima at a distance of 1 m from the slit?

In a Van de Graaff generator, when a metallic wire is connected between the two conductors, the charge flows from