ETEA MDCAT Past Paper 2023 Re-Conduct Page 8

ETEA MDCAT Past Paper 2023 Re conduct

141- If a moving object has no force acting on it:

A. it will decelerate and eventually stop

B. continue to move in a straight line at constant velocity

C. its velocity will increase while moving in a straight line

D. it will stop immediately

View Answer

Answer : B. continue to move in a straight line at constant velocity

Description

142- If the acceleration of a body in one inertial frame is zero, its acceleration in any other inertial frame is:

A. increased

B. also zero

C. is decreased

D. increased and then decreased

View Answer

Answer : B. also zero

Description

143- If the amount of work W is required to move a charge Q from one point to another then the potential difference between the two points is given by:

A. v = W/Q

B. V = Q/W

C. Q = W/V

D. Q = V/W

View Answer

Answer : A. v = W/Q

Description

144- In a magnetic field, a photon passing through it are deflected towards:

A. North pole

B. South pole

C. Opposite pole

D. None of these

View Answer

Answer : D. None of these

Description

145- In special theory of relativity, the law of conservation of energy and law of conservation of mass have been replaced with:

A. The law of conservation of mass only

B. Law of conservation of mass-energy

C. Law of conservation of energy only

D. All of the above

View Answer

Answer : B. Law of conservation of mass-energy

Description

146- In three dimensional Cartesian Coordinate system (x,y,z), you have two vectors A and B.vectors has components Ax=4, Ay=-3 and Az=2, while vector B has component Bx=1, By=5 and Bz=-2. What is the dot (scalar product) of vectors A and B?

A. -23

B. 23

C. 0

D. -19

View Answer

Answer : D. -19

Description

147- In case of Doppler effect, the apparent frequency will be ______ the actual frequency when the source move towards the stationary observer.

A. Less than

B. More than

C. Equal to

D. None of these

View Answer

Answer : B. More than

Description

148- Magnetic flux is maximum when the angle between the magnetic field and the normal to the plane of finite area is:

A. Zero degree

B. 30 degree

C. 60 degree

D. 90 degree

View Answer

Answer : A. Zero degree

Description

149- Measure of displacement covered with passage of time is called:

A. Acceleration

B. Speed

C. Velocity

D. Deceleration

View Answer

Answer : C. Velocity

Description

150- Newton’s 3rd law of motion is correlated with

A. Law of conservation of energy

B. Law of conservation of momentum

C. Law of conservation of velocity

D. All of these

View Answer

Answer : B. Law of conservation of momentum

Description

151- Ohm’s law states that the current is directly proportional to and inversely proportional to .

A. Resistance, current

B. Resistance, voltage

C. Voltage, current

D. Voltage, resistance

View Answer

Answer : D. Voltage, resistance

Description

152- The ability to produce an electromotive force by changing the magnetic field inside a coil is used to generate.

A. Mechanical energy

B. Electricity

C. Electromagnetic force

D. Magnetic energy only

View Answer

Answer : B. Electricity

Description

153- The absolute potential energy of a spaceship on the surface of the earth is:

A. GmMe/Re²

B. GmMe/Re

C. GmMe/2Re

D. – Gme/Re

View Answer

Answer : D. - Gme/Re

Description

154- The bird perching on a high-power line does not get electric chock. This is because:

A. The whole body of the bird sitting on the live wire is at the same potential and hence no current flows through the body

B. The whole body of the bird sitting on the live wire is a zero potential and hence no current flows through the body

C. Because the air medium between the live wire and the earth contains large number of charge particles

D. Because the air medium between the live wire and the earth contains large number of electrons

View Answer

Answer : A. The whole body of the bird sitting on the live wire is at the same potential and hence no current flows through the body

Description

155- The capacitance of capacitor depends upon?

A. Area of the plates

B. Distance between the palates

C. Dielectric between them

D. All of these

View Answer

Answer : D. All of these

Description

156- The compton’s effect is the phenomenon that describes:

A. The scattering of the light by prism

B. The bending of light when it passes from one medium to another

C. The change in the wavelength of x-rays when the interact with matter

D. The creation of interference patterns in a double-slit experiment

View Answer

Answer : C. The change in the wavelength of x-rays when the interact with matter

Description

157- The current produced by a generator is called:

A. Direct current

B. Pulsating current

C. Alternating current

D. Variable current

View Answer

Answer : C. Alternating current

Description

ETEA MDCAT Past Paper 2023 Re conduct

141- If a moving object has no force acting on it:

A. it will decelerate and eventually stop

B. continue to move in a straight line at constant velocity

C. its velocity will increase while moving in a straight line

D. it will stop immediately

Answer : B. continue to move in a straight line at constant velocity

142- If the acceleration of a body in one inertial frame is zero, its acceleration in any other inertial frame is:

A. increased

B. also zero

C. is decreased

D. increased and then decreased

Answer : B. also zero

143- If the amount of work W is required to move a charge Q from one point to another then the potential difference between the two points is given by:

A. v = W/Q

B. V = Q/W

C. Q = W/V

D. Q = V/W

Answer : A. v = W/Q

144- In a magnetic field, a photon passing through it are deflected towards:

A. North pole

B. South pole

C. Opposite pole

D. None of these

Answer : D. None of these

145- In special theory of relativity, the law of conservation of energy and law of conservation of mass have been replaced with:

A. The law of conservation of mass only

B. Law of conservation of mass-energy

C. Law of conservation of energy only

D. All of the above

Answer : B. Law of conservation of mass-energy

146- In three dimensional Cartesian Coordinate system (x,y,z), you have two vectors A and B.vectors has components Ax=4, Ay=-3 and Az=2, while vector B has component Bx=1, By=5 and Bz=-2. What is the dot (scalar product) of vectors A and B?

A. -23

B. 23

C. 0

D. -19

Answer : D. -19

147- In case of Doppler effect, the apparent frequency will be ______ the actual frequency when the source move towards the stationary observer.

A. Less than

B. More than

C. Equal to

D. None of these

Answer : B. More than

148- Magnetic flux is maximum when the angle between the magnetic field and the normal to the plane of finite area is:

A. Zero degree

B. 30 degree

C. 60 degree

D. 90 degree

Answer : A. Zero degree

149- Measure of displacement covered with passage of time is called:

A. Acceleration

B. Speed

C. Velocity

D. Deceleration

Answer : C. Velocity

150- Newton’s 3rd law of motion is correlated with

A. Law of conservation of energy

B. Law of conservation of momentum

C. Law of conservation of velocity

D. All of these

Answer : B. Law of conservation of momentum

151- Ohm’s law states that the current is directly proportional to ______ and inversely proportional to ______.

A. Resistance, current

B. Resistance, voltage

C. Voltage, current

D. Voltage, resistance

Answer : D. Voltage, resistance

152- The ability to produce an electromotive force by changing the magnetic field inside a coil is used to generate.

A. Mechanical energy

B. Electricity

C. Electromagnetic force

D. Magnetic energy only

Answer : B. Electricity

153- The absolute potential energy of a spaceship on the surface of the earth is:

A. GmMe/Re²

B. GmMe/Re

C. GmMe/2Re

D. – Gme/Re

Answer : D. - Gme/Re

154- The bird perching on a high-power line does not get electric chock. This is because:

151- Ohm’s law states that the current is directly proportional to and inversely proportional to .