In which light produces image focus in front of the retina?

The torque on a rectangular coil placed in a uniform magnetic field is large when the

Nuclear energy is generated by

The fringe width in Young’s double-slit experiment can be increased if we decrease

In a Van de Graaff Generator the inner sphere has higher _____________ than the outer sphere.

Communication frequency band range for FM broadcast is

In the given figure the electric field tend to rotate the electric dipole:

A rectangular current carrying coil of length 2 m and width 4 m having 100 turns is placed in a magnetic field of 0.05 tesla. Find the torque due to magnetic field on the coil if angle between the coil and the magnetic field is 90° and current in the coil is 3 A?

The wavelength of the incident photons for a photoelectric emission process is increased then the photoelectric current will-

A ray of light is incident on a very thin prism, the infractive index of the material of the prism is 1.6. The deviation of the ray of light is 6°. Find the angle of the prism. 

Which of the following statement is true about de-Broglie wavelength of moving ball in cricket:

The intensity and frequency of the incident light is increased by two times. Then which of the following is true?

What is the linear magnification m, for the image formed at the near point D, by a simple microscope equal to? (f is focal length)

Consider the junction diode as ideal. The value of current flowing through AB is

What type of voltage is applied to the D shaped disc of the cyclotron?

Optical communication using fibers is performed in the frequency range of:

The kirchhoff's first law is based on-

A charge particle of charge q is placed at a point. Find the magnitude of electric field at a distance of 1 m from the charge particle if the space is filled with a dielectric of dielectric constant 1.5.

Which one of the following circuit elements is an active component?

Zener Diode is mostly used as ___________.

For the arrangement of capacitors as shown in the circuit, the effective capacitance between the points A and B is (capacitance of each capacitor is 4 μF)

Which of the following is best absorber of X-rays?

If a plane wavefront is incident on a convex lens then the emergent wavefront will be _______________

The magnetic field due to a small magnetic dipole of magnetic moment M, at distance r from the centre on the equatorial line is given by (in MKS system)

Which one is a Correct order of light intensity provided per unit power consumed, from the lowest power consumed to the highest.

A positive charged particle projected toward west is deflected toward north by a magnetic field. The direction of the magnetic field is

If the critical angle for total internal reflection from a medium to vacuum is 30^∘. Then the speed of light in the medium is

The image formed by a convex mirror will

Find the equivalent internal resistance and potential of the given circuit.

Waves used for telecommunication are:

What constitutes electric current in a solid conductor?

The charge enclosed in the two cubes A and B is q. If ratio of the surface area of cubes A to cube B is 1 : 2, then the ratio of the flux associated with cube A to cube B will be:

In photo electric effect, the maximum initial velocity of emitted electrons depends upon

Why do we use the band pass filter for the production of amplitude modulated wave? (ω_m and ω_c are the angular frequency of the modulating signal and the carrier wave respectively)

A current in a coil of inductance 5 H decreases at a rate of 2 Amp/sec. The induced emf is

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

Identify the given waveform

 In Rutherford experiment of discovery of nucleus, when thin foils of metal were bombarded with a beam of α-particle

The phase difference between the current and voltage in L-C-R circuit at resonance is:

Three charges +2q, +q, and Q are placed as shown in the figure. For the net force on +q to be zero, the charge on Q must be

Which of these is the correct statement for Gauss' Law?

Where does the process called nuclear fission takes place?

When a ray of light passes from one medium to another (rarer to denser or denser to rarer), which of the following phenomenon of light is observed?

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?

When a dielectric material of K dielectric constant is inserted between two parallel plate capacitor the electric field in between region of the plates

Ohm’s law defines

If the frequency of the AC current increases, then the impedance of the series R-C circuit will____:

Voltage and frequency of domestic power supply used in India is

The ratio of the wavelength of the monochromatic light A to the monochromatic light B is 1 : 2, then find the ratio of the momentum of the photon of light A to the photon of light B.

Electric field intensity due to thin infinite parallel sheets of charge in region 1 is ( a field pointing from left to right is taken as positive and the one pointing from right to left is taken as negative. )