Physics Test 60...

Which of the following is incorrect about the sensitivity of a moving coil galvanometer?

If the distance between the Earth and the Sun is half its present value, the number of days in a year will be

A thin semicircular conducting ring of radius R is falling with its plane vertical in horizontal magnetic induction  At the position MNQ, the speed of the ring is V, and the potential difference developed across the ring is

The van der Waal equation for n moles of a real gas is

(P+a / V²) (V−b) = nRT

Where P is the pressure, V is the volume, T is the absolute temperature, R is the molar gas constant and a,b,c are van der Waal's constants. The dimensions of a :

A particle is displaced from a position The work done by the force in an arbitrary unit is

The ratio of the wavelengths of the longest wavelength lines in Lyman and Balmer series of hydrogen spectrum is

The distance between the sun and the earth is r and the earth takes time T to make one complete revolution around the sun. Assuming the orbit of the earth around the sun to be circular, the mass of the sun will be proportional to

Two spherical bodies of masses ′M′ and ′5M′ and radii ′R′ and ′2R′, respectively, are released in free space with initial separation between their centres equal to ′12R′. If they attract each other due to gravitational force only, then what is the distance covered by the smaller body just before collision?

The kinetic energies of photoelectrons emitted from a metal are K₁ and K₂ when it is irradiated with lights of wavelengths λ₁ and λ₂, respectively. The work function of the metal is

A candle of diameter ′d′ is floating on a liquid in a cylindrical container of diameter ′D′ (D>>d) as shown in the figure. If it is burning at the rate of 2 cm/h, the top of the candle will