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Dimensions of impulse are:

[ML–2T–3]

[ML–2]

[MLT–1]

[MLT–2]

By what percentage should the pressure of a given mass of gas be increased, so as to decrease its volume by 10% at a constant temperature?

11.1%

10.1%

9.1%

8.1%

The dimensions of the ratio of angular momentum to linear momentum:

[M1L–3T0]

[M0L1T0]

[M0L0T–1]

[M0L1T–2]

zero

[L3]

[ML3T–2]

[ML5T–2]

[ML2T–2]

A micron in centimeter is equal to:

10–8

10–6

10–5

10–4

A magnetic field:

always exerts a force on charged particle

never exerts a force on charged particle

exerts a force, if the charged particle is moving across the magnetic field lines

exerts a force, if the charged particle is moving along the magnetic field lines

1

10

None of these

45º

60º

90º

120º

18%

6%

3%

1%

While measuring acceleration due to gravity by a simple pendulum, a student makes a positive error of 2% in length of the pendulum and a positive error of 1% in the value of time period. The actual percentage error in the measurement of the value of g will be:

3%

4%

5%

zero percent

Maximum and minimum values of the resultant of two forces acting at a point are 7N and 3N respectively. The smaller force will be equal to:

5N

4N

2N

1N

Given that ? is the speed, r is radius and g is acceleration due to gravity. Which of the following is dimensionless?

The least count of a stop watch is 1/5 second. The time of 20 oscillations of a pendulum is measured to be 25 seconds. The minimum percentage error in the measurement of time will be

0(1%

8%

1(8%

0(8%

A particle of mass 100 gm and charge 2 (C is released from a distance of 50 cm from a fixed charge of 5(C. Find the speed of the particle when its distance from the fixed charge becomes 3 m. Neglect any other force.

–1.73 m/s

2.73 m/s

–2.73 m/s

1.73 m/s.

10(

20(

30(

40(

[ML–2T–3]

[ML–2]

[MLT–1]

[MLT–2]

By what percentage should the pressure of a given mass of gas be increased, so as to decrease its volume by 10% at a constant temperature?

11.1%

10.1%

9.1%

8.1%

The dimensions of the ratio of angular momentum to linear momentum:

[M1L–3T0]

[M0L1T0]

[M0L0T–1]

[M0L1T–2]

zero

[L3]

[ML3T–2]

[ML5T–2]

[ML2T–2]

A micron in centimeter is equal to:

10–8

10–6

10–5

10–4

A magnetic field:

always exerts a force on charged particle

never exerts a force on charged particle

exerts a force, if the charged particle is moving across the magnetic field lines

exerts a force, if the charged particle is moving along the magnetic field lines

1

10

None of these

45º

60º

90º

120º

18%

6%

3%

1%

While measuring acceleration due to gravity by a simple pendulum, a student makes a positive error of 2% in length of the pendulum and a positive error of 1% in the value of time period. The actual percentage error in the measurement of the value of g will be:

3%

4%

5%

zero percent

Maximum and minimum values of the resultant of two forces acting at a point are 7N and 3N respectively. The smaller force will be equal to:

5N

4N

2N

1N

Given that ? is the speed, r is radius and g is acceleration due to gravity. Which of the following is dimensionless?

The least count of a stop watch is 1/5 second. The time of 20 oscillations of a pendulum is measured to be 25 seconds. The minimum percentage error in the measurement of time will be

0(1%

8%

1(8%

0(8%

A particle of mass 100 gm and charge 2 (C is released from a distance of 50 cm from a fixed charge of 5(C. Find the speed of the particle when its distance from the fixed charge becomes 3 m. Neglect any other force.

–1.73 m/s

2.73 m/s

–2.73 m/s

1.73 m/s.

10(

20(

30(

40(

Most of the entrance tests revolve around these tricky questions which are solved here for PMT preparation in particular the AIPMT, AFMC, AIIMS, AMU, BHU, JIPMER and WB JEE. Set apart, the question are exhibited with the help self explanatory figures

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