Question 1

For listening radio in cars, external radio aerials are used because

Accepted Answer

A) radio waves have shorter wavelength 
B) radio waves have longer wavelength 
C) radio waves cannot pass through window 
D) radio waves require a medium to propagate 
A) radio waves have shorter wavelength 
B) radio waves have longer wavelength 
C) radio waves cannot pass through window 
D) radio waves require a medium to propagate

Question 2

For destructive interference, the path difference is

Accepted Answer

A) odd number of half wavelengths 
B) even number of half wavelengths 
C) whole number of wavelengths 
D) even whole number of wavelengths 
A) odd number of half wavelengths 
B) even number of half wavelengths 
C) whole number of wavelengths 
D) even whole number of wavelengths

Question 3

In NTC thermistor on increasing temperature, the resistance

Accepted Answer

A) increases 
B) remains constant 
C) decreases 
D) behaves abruptly 
A) increases 
B) remains constant 
C) decreases 
D) behaves abruptly

Question 4

If the connections across the resistor are reversed, then graph between current and potential difference is

Accepted Answer

A) variable 
B) straight lined 
C) constant 
D) inverted 
A) variable 
B) straight lined 
C) constant 
D) inverted

Question 5

Threshold voltage at which LED emits light is

Accepted Answer

A) less than 0.6 
B) equal to 0.6 
C) more than 0.6 
D) more than 3 
A) less than 0.6 
B) equal to 0.6 
C) more than 0.6 
D) more than 3

For listening radio in cars, external radio aerials are used because

For destructive interference, the path difference is

In NTC thermistor on increasing temperature, the resistance

If the connections across the resistor are reversed, then graph between current and potential difference is

Threshold voltage at which LED emits light is

Physics Force, Acceleration, and Projectile Motion

Electrical and Physics Concepts

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Physics Capacitance, Magnetic Fields, and Circular Motion

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Electricity and Magnetism

Magnetism and Electromagnetism

Magnetism, Op-Amps, and Sensing Devices

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Satellites, Gravitational Fields, and Gases

Electrical Circuit and Current

Pressure, Hookes Law, Forces and Springs, Elasticity, Stress and Strain

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Physics Topics: X-Rays, Ultrasound, Momentum, Force, and Energy

Momentum and Collisions

Physics Forces, Acceleration, and Units

Physics Terminology

Principles of Oscillatory Motion and Related Measurements

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Physics and Waves: Exploring Phenomena, Unification, and Detection

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Radiation and Nuclear Science Basics

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Exam 25: Understanding Electrical Properties and Phenomena

For listening radio in cars, external radio aerials are used because

For destructive interference, the path difference is

In NTC thermistor on increasing temperature, the resistance

If the connections across the resistor are reversed, then graph between current and potential difference is

Threshold voltage at which LED emits light is

Physics Force, Acceleration, and Projectile Motion

Electrical and Physics Concepts

Physics Pressure, Energy, and Waves

Physics Capacitance, Magnetic Fields, and Circular Motion

Physics and Communication

Electrical and Digital Concepts and Terminology

Electricity and Magnetism

Magnetism and Electromagnetism

Magnetism, Op-Amps, and Sensing Devices

Physics Forces, Moments, and Gravitational Fields

Satellites, Gravitational Fields, and Gases

Electrical Circuit and Current

Pressure, Hookes Law, Forces and Springs, Elasticity, Stress and Strain

Physics Concepts and Formulas

Physics Dimensions

Physics Topics: X-Rays, Ultrasound, Momentum, Force, and Energy

Momentum and Collisions

Physics Forces, Acceleration, and Units

Physics Terminology

Principles of Oscillatory Motion and Related Measurements

Physics and Measurement

Physics and Waves: Exploring Phenomena, Unification, and Detection

Physics and Nuclear Science

Radiation and Nuclear Science Basics

Energy and Temperature

Energy, Work, and Power

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