Question : If the numerator of a fraction is increased by 140% and the denominator of the fraction is decreased by 20%, the resultant fraction is $\frac{12}{7}$. Find the original fraction.

Option 1: $\frac{4}{9}$

Option 2: $\frac{4}{7}$

Option 3: $\frac{7}{6}$

Option 4: $\frac{8}{9}$

Question : What is a neuron?

Option 1: The basic unit of energy

Option 2: Particles released during radioactivity

Option 3: The anti-particle of neutron

Option 4: The basic unit of the nervous system

Question : Which of the statements is not correct regarding energy?

Option 1: The energy possessed by a body due to its change in position or shape is called potential energy.

Option 2: An object of mass m moving with velocity v has a kinetic energy of (mv)/2.

Option 3: The gravitational potential energy of an object of mass, M raised through a height, H from the Earth's surface is given by MgH.

Option 4: An object in motion possesses what is known as the kinetic energy of the object.

Question : The radius of curvature of a charged particle's passage in a homogeneous magnetic field is proportional to:

Option 1: energy of particle

Option 2: charge of particle

Option 3: momentum of a particle

Option 4: strength of the field

Question : A number is first increased by 16% and then increased by 20%. The number so obtained has now decreased by 40%. The net decrease percentage in the original number is:

Option 1: $16 \frac{12}{25}$%

Option 2: $15 \frac{9}{25}$%

Option 3: $11 \frac{13}{25}$%

Option 4: $13 \frac{7}{25}$%