A body is thrown vertically upward with a velocity of 30 m/s. What is the maximum height attained by the body? (Take g = 10 m/sΒ²)
A ball is dropped from a height. The time it takes to reach the ground depends on
If the velocity of an object is doubled, its kinetic energy will increase by
A car accelerates uniformly from rest for 5 seconds. The distance traveled by the car is
The heat capacity of a body is 10 J/K. The heat required to raise the temperature by 20Β°C is
The efficiency of a Carnot engine depends on
In an isothermal process, the internal energy of an ideal gas
The frequency of the second harmonic of a string fixed at both ends is
The refractive index of a medium is given by
The angular frequency of a simple harmonic oscillator is given by
The electric field inside a uniformly charged spherical shell is
A proton and an alpha particle are moving with the same kinetic energy. The ratio of their de Broglie wavelengths is
A capacitor of capacitance πΆ is charged to a potential difference π . The energy stored in the capacitor is
The magnetic field at the center of a circular loop carrying current πΌ is
The gravitational force between two bodies of masses mβ and mβ is F. If the distance between them is doubled, the force becomes
A body is moving in a circular path with a constant speed. The force that acts on the body is
A cylinder with a piston contains 1 mole of an ideal gas at a temperature of 300 K. If the gas is heated, the internal energy of the gas will
In a Carnot engine, the efficiency depends on
The frequency of oscillation of a simple pendulum is independent of
The fundamental frequency of a vibrating string is 200 Hz. The frequency of the third harmonic is
The frequency of a wave is doubled, then the wavelength becomes
The focal length of a lens is 20 cm. The power of the lens is
When light passes from air into water, the angle of refraction is
For diffraction to occur, the size of the obstacle or aperture must be comparable to
The magnification of a lens is given by the ratio of
The photoelectric effect can be explained by
In the Rutherford model of the atom, the electrons
The half-life of a radioactive substance is 10 hours. After 30 hours, the fraction of the substance remaining is
The electric field inside a uniformly charged spherical shell is
In a series combination of resistors, the total resistance is
The resistance of a conductor depends on
The critical angle of a medium is defined as the angle of incidence for which the angle of refraction is
The refractive index of a medium is the ratio of the speed of light in vacuum to
The transition of an electron from n=4 to n=2 in a hydrogen atom will emit a photon of energy corresponding to
The frequency of a photon emitted during the transition of an electron in a hydrogen atom from n=3 to n=2 is
The emission spectrum of hydrogen consists of
In a microscope, the image formed by the objective lens is
The refractive index of a medium is the ratio of the speed of light in vacuum to
The velocity of flow of an incompressible fluid through a pipe is given by the equation π£ = 1 π 4 . This represents the relationship for
A body floats in water with 80% of its volume submerged. The density of the body is
A capacitor of capacitance 10 ΞΌF is charged to a potential difference of 100 V. The energy stored in the capacitor is
A body floats in water with 80% of its volume submerged. The density of the body is
When a fluid flows through a pipe, the speed of the fluid increases when the pipe
The amount of heat required to raise the temperature of a body is directly proportional to
The half-life of a radioactive substance is 20 minutes. After 40 minutes, the fraction of the substance remaining is
A string fixed at both ends vibrates in the 3rd harmonic. The wavelength of the wave is
The intensity of light is inversely proportional to the square of the distance from the light source. If the distance from the source is doubled, the intensity becomes
The energy of an electron in the π = 2 n=2 orbit of a hydrogen atom is
n the photoelectric effect, the maximum kinetic energy of the emitted electron depends on
The threshold frequency for the photoelectric effect is π 0 . If the frequency of incident light is doubled, the energy of the emitted electron is
In alpha decay, the daughter nucleus has a mass number that is
The intensity of light varies inversely with the square of the distance. If the intensity at a distance of 2 meters is 16 W/mΒ², the intensity at a distance of 4 meters will be
In a vacuum, the speed of light is
The capacitance of a parallel plate capacitor is doubled when the distance between the plates is halved, and the dielectric constant remains constant. The change in capacitance is due to
The wave length of a photon is 400 nm. Its energy is
A heat engine has a Carnot efficiency of 50%. If the temperature of the hot reservoir is 600 K, the temperature of the cold reservoir must be
A sound wave is traveling in air. If the amplitude of the wave is doubled, the intensity of the sound will
A charge q=1ΞΌC is placed at a distance of 2 meters from a point charge. The electric field at the point is πΈ = 5 Γ 10 3 β N/C . The value of the point charge is
The energy of a photon emitted by a hydrogen atom during the transition from π = 3 to π = 2 is
A mass π is moving in a circle of radius πwith a constant speed π£. The force acting on the mass is
The frequency of the second harmonic of a string fixed at both ends is twice the frequency of the first harmonic. The frequency of the third harmonic will be
In a concave mirror, the image formed by an object placed at the focal point is
The force between two charges π 1 β and π 2 β at a distance π in a vacuum is given by
The de Broglie wavelength of a particle is given by π = β π π£ β . If the velocity of the particle is doubled, the de Broglie wavelength will
