Assertion: A body can have acceleration even if its velocity is zero at that instant of time. 
Reason: The body will be momentarily at rest when it reverses its direction of motion.

1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. If the assertion is true but the reason is false
4. If both the assertion and reason are false

Assertion: Work done in moving a charge between any two points in a uniform electric field is independent of the path followed by the charge, between these points. 
Reason: Electrostatic forces are non-conservative.

Given below are two statements: 

Assertion: Heat from the sun reaches the earth by convection. 
Reason: Air can be heated only by convection.

Assertion: A wire carrying an electric current has no electric field around it. 
Reason: Rate of flow of electron’s in one direction is equal to the rate of flow of protons in opposite direction.

Assertion: If an electron and proton enter a perpendicular magnetic field with equal momentum, then radius of curve for electron is more than that of proton. 
Reason: Electron has less mass than proton.

Assertion: The ratio  is more for helium gas than for hydrogen gas. 
Reason: Atomic mass of helium is more than that of hydrogen.

Assertion: Our ears cannot distinguish two notes, one produced by a violin and other by a guitar, if they have exactly same intensity and same frequency. 
Reason: When a musical instrument is played, it produces a fundamental note which is accompanied by a number of overtones called harmonics.

Assertion: The de-Broglie wavelength equation has significance for any microscope and submicroscopic particles. 
Reason: de-Broglie wavelength is inversely proportional to the mass of the object its velocity is constant.