List of top Physics Questions

The magnitude and direction of the current in the following circuit is

If \(∮_s\overrightarrow{E}.\overrightarrow{dS}=0\) over a surface, then:

A football player is moving southward and suddenly turns eastward with the same speed to avoid an opponent. The force that acts on the player while turning is:

The work functions of Caesium (Cs), Potassium (K) and Sodium (Na) are 2.14eV, 2.30 eV and 2.75eV respectively. If incident electromagnetic radiation has an incident energy of 2.20eV, which of these photosensitive surfaces may emit photoelectrons?

Given below are two statements:
Statement I: Photovoltaic devices can convert optical radiation into electricity.
Statement II: Zener diode is designed to operate under reverse bias in breakdown region.
In the light of the above statements, choose the most appropriate answer from the options given below:

The net magnetic flux through any closed surface is:

A full wave rectifier circuit consists of two p-n junction diodes, a centre-tapped transformer, capacitor and a load resistance. Which of these components remove the ac ripple from the rectified output?

The amount of energy required to form a soap bubble of radius 2 cm from a soap solution is nearly: (surface tension of soap solution = 0.03 Nm^-1)

The minimum wavelength of X-rays produced by an electron accelerated through a potential difference of V volts is proportional to:

Two bodies of mass m and 9m are placed at a distance of R. The gravitational potential on the line joining the bodies where the gravitational fied equals zero, will be (G = gravitational contant):

A vehicle travels half the distance with speed θ and the remaining distance with speed 2θ. its average speed is

The errors in the measurement which arise due to unpredictable fluctuations in temperature and voltage supply are:

In a series LCR circuit, the inductance L is 10 mH, Capacitance C is 1μF and resistance R is 100Ω. The frequency at which resonance occurs is

The magnetic engery stored in an inductor of inductance 4μH carrying a current of 2 A is:

In the circuit shown in the figure, the capacitor is initially uncharged and the key K is initially open in this condition, a current of 1 A flows through the 1 Ω resistor. The key is closed at a time t=t₀. Choose the correct options(given \(e^{-1}=0.36\))

The lens bounded by two spherical surfaces curved inwards is

If the object and image distances due to a convex lens are x each, then its focal length is

Irrespective of the position of the object on the principal axis, a concave lens always forms an image of nature

Usually Doctors, after testing for defects of vision, prescribe the corrective lens indicating their

Farsightedness is called

Relationship among the speed of light wave (v), wavelength (λ) and frequency (f) is given by

Which of the following statements on red colour light is true?

Blue colour of the sky is due to the scattering of light by the molecules of

If \(i_ 1\) and \(i _2\) are the angle of incidence and angle of emergence due to a prism respectively, then at the angle of minimum deviation

The minimum focal length of the eye-lens of a healthy human being is