Q. What is the effect of doubling the distance from a long straight wire on the magnetic field strength?
A.
It doubles the magnetic field strength
B.
It halves the magnetic field strength
C.
It quadruples the magnetic field strength
D.
It has no effect on the magnetic field strength
Show solution
Solution
According to the Biot-Savart Law, the magnetic field strength is inversely proportional to the distance, so doubling the distance halves the magnetic field strength.
Correct Answer: B — It halves the magnetic field strength
Learn More →
Q. What is the effect of increasing temperature on the density of a gas?
A.
Increases density
B.
Decreases density
C.
No effect
D.
Depends on pressure
Show solution
Solution
Increasing the temperature of a gas generally decreases its density, as the gas expands.
Correct Answer: B — Decreases density
Learn More →
Q. What is the effect of increasing temperature on the speed of sound in air?
A.
Increases
B.
Decreases
C.
Remains constant
D.
Depends on pressure
Show solution
Solution
Increasing temperature increases the speed of sound in air.
Correct Answer: A — Increases
Learn More →
Q. What is the effect of increasing tension on the speed of a wave traveling along a string?
A.
Increases speed
B.
Decreases speed
C.
No effect
D.
Depends on the mass
Show solution
Solution
Increasing tension in the string increases the speed of the wave.
Correct Answer: A — Increases speed
Learn More →
Q. What is the effect of increasing the altitude of a satellite on its orbital period?
A.
It decreases
B.
It increases
C.
It remains the same
D.
It becomes zero
Show solution
Solution
According to Kepler's third law, increasing the altitude of a satellite increases its orbital period.
Correct Answer: B — It increases
Learn More →
Q. What is the effect of increasing the amplitude of a sound wave?
A.
Increases pitch
B.
Increases loudness
C.
Decreases frequency
D.
Decreases speed
Show solution
Solution
Increasing the amplitude of a sound wave increases its loudness.
Correct Answer: B — Increases loudness
Learn More →
Q. What is the effect of increasing the amplitude of a wave?
A.
Increases frequency
B.
Increases speed
C.
Increases energy
D.
Decreases wavelength
Show solution
Solution
Increasing the amplitude of a wave increases its energy, as energy is proportional to the square of the amplitude.
Correct Answer: C — Increases energy
Learn More →
Q. What is the effect of increasing the angle of incidence beyond the critical angle in total internal reflection?
A.
Increased intensity of reflected light
B.
Decreased intensity of reflected light
C.
No effect on intensity
D.
Light is transmitted into the second medium
Show solution
Solution
Increasing the angle of incidence beyond the critical angle increases the intensity of the reflected light due to total internal reflection.
Correct Answer: A — Increased intensity of reflected light
Learn More →
Q. What is the effect of increasing the angle of incidence beyond the critical angle?
A.
Increased refraction
B.
Decreased reflection
C.
Total internal reflection
D.
No effect
Show solution
Solution
Increasing the angle of incidence beyond the critical angle results in total internal reflection, preventing any refraction into the second medium.
Correct Answer: C — Total internal reflection
Learn More →
Q. What is the effect of increasing the area of a loop in a uniform magnetic field on the magnetic flux?
A.
Magnetic flux increases
B.
Magnetic flux decreases
C.
Magnetic flux remains constant
D.
Magnetic flux becomes zero
Show solution
Solution
Increasing the area of the loop in a uniform magnetic field increases the magnetic flux, as magnetic flux is given by the product of the magnetic field strength and the area.
Correct Answer: A — Magnetic flux increases
Learn More →
Q. What is the effect of increasing the bandwidth of a communication channel?
A.
Increased data rate
B.
Decreased data rate
C.
No effect on data rate
D.
Increased noise
Show solution
Solution
Increasing the bandwidth allows for a higher data rate.
Correct Answer: A — Increased data rate
Learn More →
Q. What is the effect of increasing the capacitance in a capacitor in an AC circuit on the current?
A.
Increases current
B.
Decreases current
C.
No effect
D.
Current becomes zero
Show solution
Solution
Increasing the capacitance (C) decreases the capacitive reactance (X_C), which increases the current (I) in the circuit.
Correct Answer: A — Increases current
Learn More →
Q. What is the effect of increasing the capacitance in an AC circuit on the capacitive reactance?
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes zero
Show solution
Solution
Capacitive reactance (X_C) is given by X_C = 1/(2πfC). Increasing capacitance (C) decreases X_C.
Correct Answer: B — Decreases
Learn More →
Q. What is the effect of increasing the capacitance in an AC circuit on the phase angle between voltage and current?
A.
Increases phase angle
B.
Decreases phase angle
C.
No effect
D.
Phase angle becomes 90 degrees
Show solution
Solution
Increasing capacitance decreases the phase angle between voltage and current in an AC circuit.
Correct Answer: B — Decreases phase angle
Learn More →
Q. What is the effect of increasing the cross-sectional area of a conductor on its resistance?
A.
Increases resistance
B.
Decreases resistance
C.
No effect
D.
Depends on the material
Show solution
Solution
Increasing the cross-sectional area decreases the resistance, as R = ρ * (L / A).
Correct Answer: B — Decreases resistance
Learn More →
Q. What is the effect of increasing the current in a coil on the magnetic field strength?
A.
Increases
B.
Decreases
C.
No effect
D.
Depends on the coil material
Show solution
Solution
Increasing the current in a coil increases the magnetic field strength, as the magnetic field is directly proportional to the current.
Correct Answer: A — Increases
Learn More →
Q. What is the effect of increasing the current in a solenoid on the magnetic field strength inside it?
A.
Increases the magnetic field strength
B.
Decreases the magnetic field strength
C.
No effect on the magnetic field strength
D.
Reverses the direction of the magnetic field
Show solution
Solution
According to Ampere's Law, increasing the current in a solenoid increases the magnetic field strength inside it.
Correct Answer: A — Increases the magnetic field strength
Learn More →
Q. What is the effect of increasing the current in a solenoid on the magnetic field inside it?
A.
Increases
B.
Decreases
C.
Remains the same
D.
Becomes zero
Show solution
Solution
The magnetic field inside a solenoid is directly proportional to the current flowing through it. Therefore, increasing the current increases the magnetic field strength.
Correct Answer: A — Increases
Learn More →
Q. What is the effect of increasing the current in a solenoid on the magnetic field strength?
A.
Decreases the magnetic field strength
B.
Increases the magnetic field strength
C.
Has no effect
D.
Reverses the magnetic field direction
Show solution
Solution
Increasing the current in a solenoid increases the magnetic field strength, as B is directly proportional to I.
Correct Answer: B — Increases the magnetic field strength
Learn More →
Q. What is the effect of increasing the current in a wire on the magnetic field around it?
A.
Increases the magnetic field
B.
Decreases the magnetic field
C.
No effect on the magnetic field
D.
Reverses the direction of the magnetic field
Show solution
Solution
Increasing the current in a wire increases the magnetic field around it, as per the Biot-Savart Law.
Correct Answer: A — Increases the magnetic field
Learn More →
Q. What is the effect of increasing the curvature of a lens on its focal length?
A.
Focal length increases
B.
Focal length decreases
C.
Focal length remains the same
D.
Focal length becomes zero
Show solution
Solution
Increasing the curvature of a lens decreases its focal length.
Correct Answer: B — Focal length decreases
Learn More →
Q. What is the effect of increasing the damping coefficient on the amplitude of oscillation in a damped oscillator?
A.
Increases amplitude
B.
Decreases amplitude
C.
No effect
D.
Doubles amplitude
Show solution
Solution
Increasing the damping coefficient decreases the amplitude of oscillation in a damped oscillator.
Correct Answer: B — Decreases amplitude
Learn More →
Q. What is the effect of increasing the diameter of the potentiometer wire on its resistance?
A.
Resistance increases
B.
Resistance decreases
C.
Resistance remains the same
D.
Resistance becomes zero
Show solution
Solution
Increasing the diameter of the potentiometer wire decreases its resistance, as resistance is inversely proportional to the cross-sectional area of the wire.
Correct Answer: B — Resistance decreases
Learn More →
Q. What is the effect of increasing the distance between the slits in a double-slit experiment on the interference pattern?
A.
Fringe width increases
B.
Fringe width decreases
C.
Fringe intensity increases
D.
Fringe intensity decreases
Show solution
Solution
Increasing the distance between the slits decreases the fringe width, making the fringes closer together.
Correct Answer: B — Fringe width decreases
Learn More →
Q. What is the effect of increasing the distance between the slits in a double-slit experiment on the fringe separation?
A.
Increases fringe separation
B.
Decreases fringe separation
C.
No effect
D.
Fringe separation becomes zero
Show solution
Solution
Increasing the distance between the slits decreases the fringe separation as fringe width is inversely proportional to the slit separation.
Correct Answer: B — Decreases fringe separation
Learn More →
Q. What is the effect of increasing the distance from a current-carrying wire on the magnetic field strength?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It becomes zero
Show solution
Solution
According to the Biot-Savart Law, the magnetic field strength decreases with increasing distance from the current-carrying wire.
Correct Answer: B — It decreases
Learn More →
Q. What is the effect of increasing the distance from a long straight conductor on the magnetic field strength?
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
Show solution
Solution
According to Biot-Savart Law, the magnetic field strength decreases with increasing distance from the conductor.
Correct Answer: B — Decreases
Learn More →
Q. What is the effect of increasing the distance from a long straight current-carrying wire on the magnetic field strength?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It becomes zero
Show solution
Solution
According to the Biot-Savart Law, the magnetic field strength decreases with increasing distance from the wire.
Correct Answer: B — It decreases
Learn More →
Q. What is the effect of increasing the distance from a long straight wire on the magnetic field strength?
A.
It increases
B.
It decreases
C.
It remains constant
D.
It becomes zero
Show solution
Solution
The magnetic field strength decreases with increasing distance from a long straight wire, following the inverse relationship with distance.
Correct Answer: B — It decreases
Learn More →
Q. What is the effect of increasing the frequency of an AC source on the inductive reactance of a circuit?
A.
It decreases
B.
It remains the same
C.
It increases
D.
It becomes zero
Show solution
Solution
Inductive reactance (XL) is given by XL = 2πfL, so increasing the frequency (f) increases the inductive reactance.
Correct Answer: C — It increases
Learn More →
Showing 3481 to 3510 of 5000 (167 Pages)