Physics

Consider the following statements:

1. A tennis ball and a football can have equal kinetic energy if they have equal velocities.

2. A horse and a dog are running with the same speed; both have same kinetic energy

Which among the above statements is / are correct?

• Only 2 is correct

• Only 1 is correct

• Both 1 & 2 are correct

• Neither 1 nor 2 is correct

The X-ray crystallography mainly uses which among the following properties of electromagnetic radiation?

• Reflection

• Diffraction

• Interference

• Refraction

An Electric generator is based on which of the following scientific principles?

• Faraday’s law of Electromagnetic Induction

• Super ConductivityMotion

• Laws of Thermodynamics

• Newton’s Law of Motion

Which of these is the force required to move a body uniformly in a circle?

• Centrifugal force

• Centripetal force

• Kinetic force

• None of the above

Angle of friction is _______:

• equal to angle of repose

• equal to twice the angle of repose

• e is greater than the angle of repose

• is less than the angle of repose

What do we call the energy transferred between two systems by virtue of temperature difference?

• Kinetic Energy

• Potential Energy

• Mechanical Energy

• Heat Energy

Which of the following eye-defects is also known as far -sightedness?

• Myopia

• Hyper-metropia

• Cataract

• None

As per Ohm’s law, if the resistance of a conductor is doubled, what will be the effect on the current flowing through it?

• it gets doubled

• it gets halved

• it increases 4 times

• No change

What kind of cell is the mobile phone battery when it is being charged?

• Galvanic cell

• Fuel cell

• Electrolytic cell

• None of the above

Which of the following metal foils was used in the Rutherford’s alpha particle scattering experiment?

• Copper

• Silver

• Gold

• Aluminium