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Under Graduate Entrance Exams NEET Entrance Exam Physics TEST : 51

Under Graduate Entrance Exams NEET Entrance Exam # Physics Dual Nature of Radiation and Matter Prepare / Learn

Q1. In a photon-particle collision (such as photon-electron collision) the quantity which is not conserved is

A. total momentum

B. number of photons

C. None of the above

D. total energy

Answer : Option B
Explaination / Solution:
No Explaination.

Under Graduate Entrance Exams NEET Entrance Exam # Physics Communication Systems Prepare / Learn

Q2. TV set used in a typical house is

A. a channel

B. a transmitter

C. a repeater

D. a receiver

Answer : Option D
Explaination / Solution:

The equipment that sends out a radio wave is known as a transmitter; the radio wave sent by a transmitter whizzes through the air—maybe from one side of the world to the other—and completes its journey when it reaches a second piece of equipment called a receiver.A television antenna, or TV aerial, is an antenna specifically designed for the reception of over-the-air broadcast television seignal, which are transmitted at frequencies from about 41 to 250 MHz in the VHF band, and 470 to 960 MHz in the UHF band in different countries..

Under Graduate Entrance Exams NEET Entrance Exam # Physics Motion in A Plane Prepare / Learn

Q3. The path of a projectile is

A. straight line

B. cubic

C. hyperbola

D. a parabola

Answer : Option D
Explaination / Solution:

A particle with a vertical and horizontal velocity travelling in a gravitational field will trace out a parabola.

Under Graduate Entrance Exams NEET Entrance Exam # Physics Work Energy and Power Prepare / Learn

Q4. mass and energy are equivalent and are related by

A. E=mc2

B. E=mc3

C. E=2mc2

D. E=mc2/2

Answer : Option A
Explaination / Solution:

Mass–Energy equivalence states that anything having mass has an equivalent amount of energy and vice versa, with these fundamental quantities directly relating to one another by Einstein's theory of special relativity. It shows that matter (as mass) and energy can be converted into each other according to the famous equation

E = m c^{2}

Under Graduate Entrance Exams NEET Entrance Exam # Physics Electric Charges and Fields Prepare / Learn

Q5. At any point on S on an electric field line

A. the curvature is in the direction of

\vec{E}

at that point

B. the tangent to the line is in the direction of

\vec{E}

at that point

C. the binormal to the line is in the direction of

\vec{E}

at that point

D. the perpendicular to the line is in the direction of

\vec{E}

at that point

Answer : Option B
Explaination / Solution:

When a tangent is drawn at any point on field line then that tangent gives the direction of electric field at that point

Under Graduate Entrance Exams NEET Entrance Exam # Physics Mechanical Properties of Solids Prepare / Learn

Q6. Young’s modulus Y is

A. the ratio of tensile (or compressive) stress (σ) to the longitudinal str

B. the ratio of longitudinal strain (ε) to the tensile (or compressive) stress (σ)

C. the ratio of shear strain (θ) to the longitudinal stress (σ)

D. the ratio of shear stress (σ) to the longitudinal strain (θ)

Answer : Option A
Explaination / Solution:

The ratio of stress and strain is called modulus of elasticity is the characteristic of the material. they are (a) Young's modulus (b) Shear Modulus (c) Bulk modulus

Young's Modulus is denoted by Y and is given by the ratio of tensile (or compressive) stress $(σ) " role="presentation" style="display: inline; line-height: normal; word-spacing: normal; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;"> (σ)$ to the longitudinal strain $(ε) " role="presentation" style="display: inline; line-height: normal; word-spacing: normal; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;"> (ε)$ Y = tensile stress/longitudinal strain $Y = σ / ϵ " role="presentation" style="display: inline; line-height: normal; word-spacing: normal; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; position: relative;"> Y = σ / ϵ$

Under Graduate Entrance Exams NEET Entrance Exam # Physics Thermodynamics Prepare / Learn

Q7. The heat engine takes

A. heat

Q_{1}

from a hot reservoir at temperature

T_{1}

, releases heat

Q_{2}

to a cold reservoir at temperature

T_{2}

and delivers work W to the surroundings

B. heat

Q_{1}

from a cold reservoir at temperature

T_{1}

, releases heat

Q_{2}

to a hot reservoir at temperature

T_{2}

and delivers work W to the surroundings

C. heat

Q_{1}

from a hot reservoir at temperature

T_{1}

, releases heat

Q_{2}

to a hot reservoir at temperature

T_{2}

and delivers work W to the surroundings

D. heat

Q_{1}

from a cold reservoir at temperature

T_{1}

, releases heat

Q_{2}

to a cold reservoir at temperature

T_{2}

and delivers work W to the surroundings

Answer : Option A
Explaination / Solution:

a heat engine converts heat energy to mechanical work by using the temperature difference between a hot "source" and a cold "sink". Heat is transferred from the source, through the "working body" of the engine, to the "sink", and in this process some of the heat changes into work by using the qualities of the gas or liquid inside the engine.

Under Graduate Entrance Exams NEET Entrance Exam # Physics Atoms Prepare / Learn

Q8. Which of these statements about De Broglie Explanation of Bohr model is correct?

A. electron in its circular orbit, as proposed by Bohr, must be seen as electromagnetic wave

B. travelling wave is formed on a circular orbit where integral number of de Broglie Wavelengths fit into the circumference of the orbit

C. Standing wave is formed on a circular orbit where integral number of de Broglie wavelengths fit into the circumference of the orbit

D. electron in its circular orbit, as proposed by Bohr, must be seen as a particle .

Answer : Option C
Explaination / Solution:
No Explaination.

Under Graduate Entrance Exams NEET Entrance Exam # Physics Physical World Prepare / Learn

Q9. To get the law of free fall under gravity, it is better

A. none of these

B. to create a real world experiment of feather and stone

C. to create a situation where in the air resistance is not negligible

D. to create a situation where in the air resistance is negligible

Answer : Option D
Explaination / Solution:

In ohysics, we can neglect some small forces, quantities and calculation.

Under Graduate Entrance Exams NEET Entrance Exam # Physics Laws of Motion Prepare / Learn

Q10. Rolling friction is

A. greater than or equal to static

B. greater than static friction

C. equal to static friction

D. less than static friction

Answer : Option D
Explaination / Solution:

As the area of contact is less in the case of rolling than in the case of sliding. In rolling surface of contact do not rub each other. The velocity of the point of contact with respect to the surface remains zero all the time although the Centre of mass of the wheel moves forward. Hence rolling friction is negligible in comparison to static friction.

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Under Graduate Entrance Exams NEET Entrance Exam Physics TEST : 51