Physics - 1 - mdcatelite

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#1. Which one of the following is a non-conservative force?

Frictional force

Gravitational force

Elastic spring force

Electric force

#2. Full rectification is given by:

Three diodes connected in bridge type arrangement

One diode connected in bridge type arrangements

Two diodes connected in bridge type arrangements

Four diodes connected in bridge type arrangemet

#3. The magnitude of the current in metals is proportional to the potential difference across it as long as temperature of conductor is kept constant is known as:

Ampere's law

Gauss law

Joule's law

Ohm's law

#4. An electric motor is used to lift the weight of 2N through a vertical distance of 100 cm in 4 sec. What is the power output of the motor?

1 W

0.75 W

0.5 W

0.25 W

#5. The instantaneous velocity along the curved path is:

Parallel to the radius

Anti-parallel to the radius

Perpendicular to the slope

Along the tangent

#6. In v-t graph, the area under graph is equal to the:

Distance covered by object

Acceleration of an object

Speed of an object

Velocity of an object

#7. The unit of decay constant is:

ms^-1

s^-1

#8. A diode characteristic curve is a plot between:

Current and Time

Reverse voltage and Forward voltage

Voltage and Time

Voltage and Current

#9. In an elastic collision the total kinetic energy

Dissipates after collision

Before and after collision remains the same

Increases after collision

Reduces after collision

#10. Which series falls in ultra violet region?

Brachett

Pfund

Lyman

Paschen

#11. Light propagates through space as a wave is evident by all of the following EXCEPT

Photoelectric effect

Polarization

Interference

Diffraction

#12. Which one of the following is NOT a feature of electric force?

They can be attractive

They can be repulsive

They act on charges

They act on masses

#13. The formula φ = B.A represents

Gravitational flux

Electric flux density

Electric flux

Magnetic flux

#14. The SI unit of capacitance of a capacitor is:

Volt

Coulomb

Ampere

Farad

#15. An air craft makes a turn in a horizontal circle of radius 100m. It is travelling with a velocity of 250m/sec. The angular velocity of the air craft will be:

1.5 rad/sec

2.5 rad/sec

3 rad/sec

3.5 rad/sec

#16. The distance between two successive particles which are exactly in the same state of vibration is called

Time period

Amplitude

Wavelength

Frequency

#17. The induced current will flow in such a direction so as to oppose the cause that produces it is statement of:

Lenz's law

Faraday's law

Ampere's law

Joule's law

#18. The potential through which an electron should be accelerated, so that on collision it can lift the electron in the atom from its ground state to some higher state is known as:

Acceleration potential

Ionization potential

String potential

Excitation potential

#19. Electric intensity between two oppositely charged plates in the middle region is ______________

Variable

Uniform

Cannot be predicted

Non-uniform

#20. Which of the following statement is INCORRECT for any magnetic field lines?

The lines are curved

Lines start at north pole and ends at south pole

Magnetic field is strongest when the lines are farthest

Lines never touch or cross each other

#21. Find potential difference in moving 2C charge which requires 600J of work between two points

2400V

150V

300V

1200V

#22. Which of the following is NOT the somatic biological effect of radiation

Genes mutation

Loss of hair

Induction of cancer

Skin burn

#23. An artificial radioactive element can be made by bombarding

High energy particles on stable elements

Low energy particles on stable elements

Low energy particles on unstable elements

High energy particles on unstable elements

#24. 1 KWh = __________ J?

3.6 GJ

3.6 KJ

3.6 J

3.6 MJ

#25. The formula V = W/q_o represents

Electric intensity

Electric field potential

Electric power

Electric potential

#26. What is the value of heat energy (Q) in an adiabatic process?

-1

#27. Which of the following regarding X rays is INCORRECT

They are high energy photons

They are highly penetrating in soft body tissues

Have higher wavelength than visible light

They are part of electromagnetic spectrum

#28. Which one of the following is INCORRECT about the nodes when the string is plucked:

Amplitude of vibration is zero

Distance between consecutive nodes is 1 wavelength

Do not move along the string

Produced at the fixed ends of strings

#29. The charge of 90C passes through a wire for 30 seconds. Then the current in the wire will be

0.3 mA

0.3 A

3 mA

3 A

#30. When a force of 1N displaces its point of application by 1m in the direction of force, the work done is

10 J

1 J

0 J

#31. When the length of copper wire is doubled then resistivity becomes

Double

Remains same

Four times

Half

#32. According to Newton’s law of motion the mass of the object is quantitative measure of its

Acceleration

Speed

Weight

Inertia

#33. The unit of magnetic field density is:

Wbm^-2

Wbm^-1

Wbm

#34. In transverse waves the portion above the mean level is called:

Wavefront

Wavecrest

Wavetrough

Wavelength

#35. The range of projectile will be maximum if the factor sin2θ becomes

-1

Zero

#36. In an AC generator the emf will be maximum when factor sinωt is equal to:

Zero

1/2

#37. The resistance of semi-conductor with rise is temperature

Infinite

Remains same

Decreases

Increases

#38. The centripetal acceleration of an object moving along a circle of radius ‘r’ with an angular speed ‘ω’ is given by the formula:

a = r²ω

a = rω²

a = r²ω²

a = rω

#39. Electric generators and transformers are based on the principles of:

Ampere's law

Faraday's law

Coulomb's law

Hook's law

#40. The value of Planck’s constant is:

6.63x10³⁴ Js

6.63x10³⁴ J/s

6.63x10^-34 J/s

6.63x10^-34 Js

#41. The two dimensional motion under constant acceleration due to gravity is called:

Rotational motion

Vibratory motion

Circular motion

Projectile motion

#42. In an ideal transformer:

Power input is less than half of the power output

Power input is greater than power output

Power input is equal to power output

Power input is more than half of the power output

#43. A roller coaster is moving with 30 m/s on a circular track of radius 30m, the net mass of coaster + passengers is ‘m’ the centripetal force acting on it is:

450m

900m

30m

#44. Work done is equal to:

Effort - Distance

Effort + Distance

Effort x Distance

Effort / Distance

#45. The conversion of AC into DC is called rectification and circuit is called rectifier. Which component of electronics acts as a rectifier?

Diode

Inductor

Transistor

Transformer

#46. During the isothermal process, the temperature

remains constant throughout the process

remains constant during the initial phase of the process

alters throughout the process

increases throughout the process

#47. Which one of the following does not cause stationary waves?

Two waves of equal frequency

Two waves of same speed

Two waves of unequal amplitude

Two waves of travelling in opposite directions

#48. Volt x Ampere is the measure of:

Resistance

Power

Current

Volt

#49. A particle of mass ‘m’ is moving on a circular path of radius ‘r’ with velocity ‘v’, then centripetal force acting on it is F, if the velocity of particle increases by 2 times and radius of circular path increases by 4 times then new centripetal force F’ will be:

F' = 4 F

F' = F

F' = 1/2 F

F' = 2 F

#50. The de-Broglie wavelength associated with a particle moving at 10⁶ m/s and having mass 10^-30 kg

6.6x10^-10 m

7.2x10^-8 m

1.5x10⁹ m

1.9x10^-5 m

Finish

Results

#1. Which one of the following is a non-conservative force?

#2. Full rectification is given by:

#3. The magnitude of the current in metals is proportional to the potential difference across it as long as temperature of conductor is kept constant is known as:

#4. An electric motor is used to lift the weight of 2N through a vertical distance of 100 cm in 4 sec. What is the power output of the motor?

#5. The instantaneous velocity along the curved path is:

#6. In v-t graph, the area under graph is equal to the:

#7. The unit of decay constant is:

#8. A diode characteristic curve is a plot between:

#9. In an elastic collision the total kinetic energy

#10. Which series falls in ultra violet region?

#11. Light propagates through space as a wave is evident by all of the following EXCEPT

#12. Which one of the following is NOT a feature of electric force?

#13. The formula φ = B.A represents

#14. The SI unit of capacitance of a capacitor is:

#15. An air craft makes a turn in a horizontal circle of radius 100m. It is travelling with a velocity of 250m/sec. The angular velocity of the air craft will be:

#16. The distance between two successive particles which are exactly in the same state of vibration is called

#17. The induced current will flow in such a direction so as to oppose the cause that produces it is statement of:

#18. The potential through which an electron should be accelerated, so that on collision it can lift the electron in the atom from its ground state to some higher state is known as:

#19. Electric intensity between two oppositely charged plates in the middle region is ______________

#20. Which of the following statement is INCORRECT for any magnetic field lines?

#21. Find potential difference in moving 2C charge which requires 600J of work between two points

#22. Which of the following is NOT the somatic biological effect of radiation

#23. An artificial radioactive element can be made by bombarding

#24. 1 KWh = __________ J?

#25. The formula V = W/qo represents

#26. What is the value of heat energy (Q) in an adiabatic process?

#27. Which of the following regarding X rays is INCORRECT

#28. Which one of the following is INCORRECT about the nodes when the string is plucked:

#29. The charge of 90C passes through a wire for 30 seconds. Then the current in the wire will be

#30. When a force of 1N displaces its point of application by 1m in the direction of force, the work done is

#31. When the length of copper wire is doubled then resistivity becomes

#32. According to Newton’s law of motion the mass of the object is quantitative measure of its

#33. The unit of magnetic field density is:

#34. In transverse waves the portion above the mean level is called:

#35. The range of projectile will be maximum if the factor sin2θ becomes

#36. In an AC generator the emf will be maximum when factor sinωt is equal to:

#37. The resistance of semi-conductor with rise is temperature

#38. The centripetal acceleration of an object moving along a circle of radius ‘r’ with an angular speed ‘ω’ is given by the formula:

#39. Electric generators and transformers are based on the principles of:

#40. The value of Planck’s constant is:

#41. The two dimensional motion under constant acceleration due to gravity is called:

#42. In an ideal transformer:

#43. A roller coaster is moving with 30 m/s on a circular track of radius 30m, the net mass of coaster + passengers is ‘m’ the centripetal force acting on it is:

#44. Work done is equal to:

#45. The conversion of AC into DC is called rectification and circuit is called rectifier. Which component of electronics acts as a rectifier?

#46. During the isothermal process, the temperature

#47. Which one of the following does not cause stationary waves?

#48. Volt x Ampere is the measure of:

#49. A particle of mass ‘m’ is moving on a circular path of radius ‘r’ with velocity ‘v’, then centripetal force acting on it is F, if the velocity of particle increases by 2 times and radius of circular path increases by 4 times then new centripetal force F’ will be:

#50. The de-Broglie wavelength associated with a particle moving at 106 m/s and having mass 10-30 kg

#25. The formula V = W/q_o represents

#50. The de-Broglie wavelength associated with a particle moving at 10⁶ m/s and having mass 10^-30 kg