In relation to spectral series, which of the following options correctly states the Brackett series? (Consider that A is the wavelength, R is Rydberg constant, and n may have integral values.)

If the least distance of distinct vision for a person is 50 cm, then what should be the focal length of the reading spectacles for that person?

Which of the following types of forces is experienced by a dipole that is placed in a uniform electric f‌ield with its axis parallel to the f‌ield?

What is the linear charge density, if an inf‌inite line charge produces a f‌ield of 8 x104 N C'1 at a distance of 1.8 cm?

Which of the following options correctly def‌ines the range (dT), if an antenna radiates electromagnetic waves from a height h? (Consider that R is the radius of the earth.)

If q is the charge given to a conductor and V is the potential developed in the conductor, then which of the following options correctly defines the capacitance?

An atom with z = 26 and a = 58 contains ________ protons and ________ neutrons.

Capillary beds have precapillary ____________ at the junction of capillaries and the metarteriole.

Ultraviolet light that is not transmitted through a pane of glass is _______.

When a parcel of air sinks in the atmosphere, there is usually _________.

The quadriceps femoris is a knee __________ used to rise from a seated position.