JEE Main Question Paper 2016 (Available): Check Previous Year Question Paper with Solution PDF (2024-2014)

1.

A hydrogen atom in ground state is given an energy of 10.2 eV. How many spectral lines will be emitted due to transition of electrons ?

• 6
• 3
• 10
• 1

2.

In the above reaction product ’P’ is

3.

The temperature of a gas is \(-78^\circ\text{C}\) and the average translational kinetic energy of its molecules is \( K \). The temperature at which the average translational kinetic energy of the molecules of the same gas becomes \( 2K \) is:

• \(-39^\circ\text{C}\)
• \(117^\circ\text{C}\)
• \(127^\circ\text{C}\)
• \(-78^\circ\text{C}\)

4.

The following figure represents two biconvex lenses \( L_1 \) and \( L_2 \) having focal lengths 10 cm and 15 cm, respectively. The distance between \( L_1 \) and \( L_2 \) is:

• 10 cm
• 15 cm
• 25 cm
• 35 cm

5.

A nucleus at rest disintegrates into two smaller nuclei with their masses in the ratio of 2:1. After disintegration they will move

• In opposite directions with speed in the ratio of 1:2 respectively
• In opposite directions with speed in the ratio of 2:1 respectively
• In the same direction with same speed.
• In opposite directions with the same speed.