List of top Physics Questions

Two identical current carrying coils with same centre are placed with their planes perpendicular to each other. If i = $\sqrt{2}A$ and radius of coil R = 1 m, then magnetic field at centre C is equal to:

Which logic gate is specified by given circuit

A sphere of density ρ & mass m is moving down with constant velocity in viscous liquid of density ρ₀. Find out viscous force on sphere

A monochromatic light wave with wavelength λ₁ and frequency ν₁, in air, enters another medium. If the angle of incidence and angle of refraction at the interface are 45° and 30° respectively, then the wavelength λ₂ and frequency ν₂of the refracted wave are:

A wire of length 2 m, radius of cross-section 20 mm and Young's Modulus 2×10¹¹ N/m is subjected to a force of 62.8 kN.The change in length of the wire is p×10^–5 (in m). Find P.

In a thermodynamic process work done by gas is 1000 J & heat supplied is 200 J. Find change in internal energy of gas?

A particle moves in a circular path with uniform speed v. When it turns by 90°, find ratio of $\frac{v}{<\overrightarrow{v}>}$?

Find out 5^th orbit radius (in pm) of Li⁺⁺ if ground orbit radius of H-atom is 51 pm.

The figure represents the momentum time (p-t) curve for a particle moving along an axis under the influence of the force Identify the regions on the graph where the magnitude of the force is maximum and minimum respectively ?If $\left(t_3-t_2\right) < t_1$

Given below are two statements :

Statement I: An elevator can go up or down with uniform speed when its weight is balanced with the tension of its cable

Statement II: Force exerted by the floor of an elevator on the foot of a person standing on it is more than his/her weight when the elevator goes down with increasing speed

In the light of the above statements, choose the correct answer from the options given below:

A solid sphere and a ring have equal masses and equal radius of gyration. If the sphere is rotating about its diameter and ring about an axis passing through and perpendicular to its plane, then the ratio of radius is $\sqrt{\frac{x}{2} }$ then find the value of x.

The weight of a body on the surface of the earth is 100 N. The gravitational force on it when taken at a height, from the surface of earth, equal to one-fourth the radius of the earth is:

If a copper wire carries a direct current, the magnetic field associated with the current would be:

10 resistors, each of resistance R are connected in series to a battery of emf E and negligible internal resistance. Then those are connected in parallel to the same battery, the current is increased n times. The value of n is:

Which one of the following cannot be polarised?

A wire is bent as shown in figure is placed in a uniform field B that emerges from the plane of the paper, outward as shown. The magnitude of force on the given wire is :

Two thin lenses of power +3D and -1D are held in contact with each other. Focal length of the combination would be:

Choose the incorrect statement from the given statements.

The potential energy of an electron is defined as U = $\frac 12$ mw²x² and follows Bohr’s law. Radius of orbit as function of n depends on? (w is same constant)

For two different photosensitive materials having work function and 2 respectively, are illuminated with light of sufficient energy to emit electrons. If the graph of stopping potential versus frequency is drawn, for these two different photosensitive materials the ratio of slope of graph for these two materials is

A proton with a kinetic energy of 2.0 eV moves into a region of uniform magnetic field of magnitude $\dfrac{\pi}{2} \times 10^{-3} \text{T}$. The angle between the direction of magnetic field and velocity of proton is 60°. The pitch of the helical path taken by the proton is \_\_\_\ cm.

The temperature of the body drops from 60°C to 40°C in 7 min. The surrounding temperature is 10°C. The temperature of the body drops from 40°C to T°C in 7 min. Find the value of T

Radius of the first orbit in H-atom is $a_0$. Then, de Broglie wavelength of electron in the third orbit is.

Two forces of magnitude A and $\frac{A}{2}$ act perpendicular to each other. The magnitude of the resultant force is equal to:

A train is moving with a speed of $10 m/s$ towards a platform and blows a horn with frequency $400 Hz$. Find the frequency heard by a passenger standing on the platform. Take speed of sound = $310 m/s$.