Physics - 1 - mdcatelite

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

7.2x10^-8 m

1.5x10⁹ m

6.6x10^-10 m

1.9x10^-5 m

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

Diode

Transistor

Transformer

Inductor

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

High energy particles on stable elements

Low energy particles on unstable elements

Low energy particles on stable elements

High energy particles on unstable elements

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

300V

2400V

150V

1200V

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

Voltage and Current

Reverse voltage and Forward voltage

Voltage and Time

Current and Time

#6. 1 KWh = __________ J?

3.6 MJ

3.6 GJ

3.6 J

3.6 KJ

#7. Work done is equal to:

Effort / Distance

Effort + Distance

Effort - Distance

Effort x Distance

#8. Volt x Ampere is the measure of:

Current

Resistance

Power

Volt

#9. 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:

2.5 rad/sec

1.5 rad/sec

3 rad/sec

3.5 rad/sec

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

Cannot be predicted

Variable

Uniform

Non-uniform

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

Infinite

Increases

Decreases

Remains same

#12. 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:

Excitation potential

Ionization potential

String potential

Acceleration potential

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

Frictional force

Elastic spring force

Electric force

Gravitational force

#14. During the isothermal process, the temperature

alters throughout the process

remains constant during the initial phase of the process

increases throughout the process

remains constant throughout the process

#15. The unit of decay constant is:

ms^-1

s^-1

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

They are part of electromagnetic spectrum

They are highly penetrating in soft body tissues

They are high energy photons

Have higher wavelength than visible light

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

Genes mutation

Loss of hair

Induction of cancer

Skin burn

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

a = rω

a = r²ω²

a = r²ω

a = rω²

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

-1

Zero

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

Wavetrough

Wavefront

Wavecrest

Wavelength

#21. 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

Ohm's law

Joule's law

#22. 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' = F

F' = 4 F

F' = 2 F

F' = 1/2 F

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

Two waves of travelling in opposite directions

Two waves of unequal amplitude

Two waves of same speed

Two waves of equal frequency

#24. 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

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

The lines are curved

Magnetic field is strongest when the lines are farthest

Lines start at north pole and ends at south pole

Lines never touch or cross each other

#26. The formula V = W/q_o represents

Electric intensity

Electric potential

Electric power

Electric field potential

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

Polarization

Photoelectric effect

Interference

Diffraction

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

Circular motion

Rotational motion

Vibratory motion

Projectile motion

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

Coulomb

Ampere

Farad

Volt

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

Amplitude of vibration is zero

Do not move along the string

Distance between consecutive nodes is 1 wavelength

Produced at the fixed ends of strings

#31. Which series falls in ultra violet region?

Brachett

Paschen

Lyman

Pfund

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

Ampere's law

Faraday's law

Coulomb's law

Hook's law

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

10 J

0 J

1 J

#34. 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?

0.75 W

1 W

0.5 W

0.25 W

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

-1

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

1/2

Zero

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

Speed

Inertia

Weight

Acceleration

#38. The unit of magnetic field density is:

Wbm

Wbm^-1

Wbm^-2

#39. In an ideal transformer:

Power input is equal to power output

Power input is less than half of the power output

Power input is greater than power output

Power input is more than half of the power output

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

0.3 A

0.3 mA

3 mA

3 A

#41. 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

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

They can be attractive

They act on charges

They can be repulsive

They act on masses

#43. Full rectification is given by:

Three diodes connected in bridge type arrangement

Two diodes connected in bridge type arrangements

Four diodes connected in bridge type arrangemet

One diode connected in bridge type arrangements

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

Perpendicular to the slope

Parallel to the radius

Anti-parallel to the radius

Along the tangent

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

6.63x10³⁴ J/s

6.63x10^-34 J/s

6.63x10³⁴ Js

6.63x10^-34 Js

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

Four times

Remains same

Half

Double

#47. In an elastic collision the total kinetic energy

Dissipates after collision

Increases after collision

Reduces after collision

Before and after collision remains the same

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

Amplitude

Frequency

Time period

Wavelength

#49. The formula φ = B.A represents

Gravitational flux

Magnetic flux

Electric flux density

Electric flux

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

Faraday's law

Ampere's law

Lenz's law

Joule's law

Finish

Results

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

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

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

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

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

#6. 1 KWh = __________ J?

#7. Work done is equal to:

#8. Volt x Ampere is the measure of:

#9. 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:

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

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

#12. 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:

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

#14. During the isothermal process, the temperature

#15. The unit of decay constant is:

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

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

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

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

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

#21. 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:

#22. 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:

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

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

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

#26. The formula V = W/qo represents

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

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

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

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

#31. Which series falls in ultra violet region?

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

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

#34. 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?

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

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

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

#38. The unit of magnetic field density is:

#39. In an ideal transformer:

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

#41. 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:

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

#43. Full rectification is given by:

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

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

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

#47. In an elastic collision the total kinetic energy

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

#49. The formula φ = B.A represents

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

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

#26. The formula V = W/q_o represents