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660+ A Level Physics Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Uncategorized topics .

Chapters

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Chapter: Circular Motion in Physics
101.

If an object moves a circular distance ‘s’ of radius ‘r’, then it's angular displacement is {{}}

A. s⁄r
B. r⁄s
C. rs
D. r2s
Answer» A. s⁄r
discuss
102.

Speed of an object travelling around a circle depends upon

A. angular velocity
B. radius
C. circumference
D. both A and B
Answer» D. both A and B
discuss
103.

Number of degree a complete circle represents is

A. 90°
B. 180°
C. 270°
D. 360°
Answer» D. 360°
discuss
104.

When a body is moving along a circular path, it's velocity is directed towards

A. center
B. normal
C. tangent
D. parallel to circle
Answer» C. tangent
discuss
105.

Speed is unchanged because work done on an object is

A. zero
B. positive
C. negative
D. infinite
Answer» A. zero
discuss
106.

180° is equal to{{}}

A. 2π rad
B. π rad
C. π⁄2rad
D. π⁄4rad
Answer» B. π rad
discuss
107.

For the minute hand of the clock, the angular velocity is equal to {{}}

A. 2 rad s-1
B. 3 rad s-1
C. 1 rad s-1
D. 0.00175 rad s-1
Answer» D. 0.00175 rad s-1
discuss
108.

105° in radians is equal to

A. 2 rad
B. 3 rad
C. 1.83 rad
D. 4.5 rad
Answer» C. 1.83 rad
discuss
109.

1 rad is equal to

A. 57.3°
B. 54°
C. 45°
D. 90°
Answer» A. 57.3°
discuss
110.

According to Newton's 2nd law the object's acceleration and centripetal force are

A. at right angles to each other
B. anti parallel to each other
C. make acute angle with each other
D. in same direction
Answer» D. in same direction
discuss
111.

A stone whirling in a horizontal circle on the end of string depicts

A. conical pendulum
B. cone
C. pendulum
D. eclipse
Answer» A. conical pendulum
discuss
112.

Centripetal force is directed towards the

A. tangent to circle
B. center
C. normal to circle
D. parallel to circle
Answer» B. center
discuss
113.

Velocity required by an object to orbit around Earth is{{}}

A. 9 km s-1
B. 7 km s-1
C. 8 km s-1
D. 10 km s-1
Answer» C. 8 km s-1
discuss
Chapter: Communication Systems
114.

As compared to sound waves the frequency of radio waves is

A. lower
B. higher
C. equal
D. may be higher or lower
Answer» B. higher
discuss
115.

Decrease in strength of signal is known as

A. tuning
B. modulation
C. attenuation
D. amplification
Answer» C. attenuation
discuss
116.

If frequency of modulated wave is less than frequency of carrier wave, then input signal is

A. negative
B. positive
C. zero
D. infinite
Answer» A. negative
discuss
117.

At the end of communication system, the signal is converted from radio to

A. sound
B. mechanical energy
C. kinetic energy
D. potential energy
Answer» A. sound
discuss
118.

Energy is lost in wires due to

A. heating
B. resistance
C. conduction
D. both A and B
Answer» D. both A and B
discuss
119.

Voltage signal generated by a microphone is

A. digital in nature
B. analogue in nature
C. consists of bits and bytes
D. hybrid in nature
Answer» B. analogue in nature
discuss
120.

Phenomena in which signal transmitted in one circuit creates undesired effect in other circuit is known as

A. crosstalk
B. signal attenuation
C. sampling
D. crosslinking
Answer» D. crosslinking
discuss
121.

Digital number 9 can be represented in binary number as

A. 110
B. 1001
C. 1010
D. 1011
Answer» B. 1001
discuss
122.

Geostationary satellite has period

A. twice of Earth
B. same as Earth
C. half of Earth
D. quarter of Earth
Answer» B. same as Earth
discuss
123.

Bit on left hand side has

A. lowest value
B. zero value
C. highest value
D. infinite value
Answer» C. highest value
discuss
124.

A digital quantity has

A. only 2 values
B. more than 2 values
C. no values
D. less than 2 values
Answer» A. only 2 values
discuss
125.

Frequency of sky waves is

A. less then 3 MHz
B. more than 3 MHz
C. less than 2 MHz
D. exactly 2 MHz
Answer» B. more than 3 MHz
discuss
126.

Each digit in a binary number is known as a

A. bit
B. byte
C. number
D. digit
Answer» A. bit
discuss
127.

Value of sampled signal is used to produce a

A. binary number
B. decimal number
C. octal number
D. all of above
Answer» A. binary number
discuss
128.

Data in compact disc is stored in form of

A. analogue signal
B. digital signal
C. noise
D. colors
Answer» B. digital signal
discuss
129.

With a 30 m long coaxial cable, the bandwidth can exceed

A. 100 MHz
B. 1000 MHz
C. 50 MHz
D. 300 MHz
Answer» A. 100 MHz
discuss
130.

Amplitude of modulated wave is in phase with

A. output
B. system
C. frequency
D. signal
Answer» D. signal
discuss
131.

Variation in amplitude or frequency of carrier wave is called

A. amplitude modulation
B. frequency modulation
C. modulation
D. bandwidth
Answer» C. modulation
discuss
132.

In frequency modulation, amplitude of modulated wave is

A. positive
B. negative
C. constant
D. zero
Answer» C. constant
discuss
133.

High quality music only needs frequencies up to

A. 10 Hz
B. 15 Hz
C. 20 kHz
D. 15 kHz
Answer» D. 15 kHz
discuss
134.

Binary system has base

A. 10
B. 11
C. 1
D. 2
Answer» D. 2
discuss
135.

In FM, frequency of modulated wave varies with

A. amplitude
B. time
C. wavelength
D. energy
Answer» B. time
discuss
136.

Unwanted signal that distorts a transmitted signal is called

A. analogue
B. noise
C. digital
D. tuning
Answer» B. noise
discuss
137.

First communication satellites used frequencies of

A. 6 GHz for uplink
B. 3 GHz for uplink
C. 6 GHz for downlink
D. 5 GHz for downlink
Answer» A. 6 GHz for uplink
discuss
138.

A wave of frequency 1 GHz has wavelength of

A. 0.4 m
B. 0.5 m
C. 0.2 m
D. 0.3 m
Answer» D. 0.3 m
discuss
Chapter: Electric Current, Potential Difference and Resistance
139.

Semiconductors have electron number density of order{{}}

A. 10 24 m-3
B. 10 20 m-3
C. 10 12 m-3
D. 10 23 m-3
Answer» D. 10 23 m-3
discuss
140.

A straight line symbol shows the

A. fuse
B. diode
C. connecting lead
D. switch
Answer» C. connecting lead
discuss
141.

Rate of flow of electric charge is

A. electric current
B. conventional current only
C. electronic current only
D. potential difference
Answer» A. electric current
discuss
142.

instrument which transfers energy to electric charges in a circuit is

A. battery
B. voltmeter
C. ammeter
D. galvanometer
Answer» A. battery
discuss
143.

Electric power is related to

A. current in component
B. potential difference
C. electrical resistance
D. both A and B
Answer» D. both A and B
discuss
144.

If a current of 1 A passes through a point in 1 s then charge passes that point is

A. 2 C
B. 3 C
C. 1 C
D. 6 C
Answer» C. 1 C
discuss
145.

Energy transferred per unit charge is

A. e.m.f
B. current
C. potential difference
D. conventional current
Answer» C. potential difference
discuss
146.

Current in a circuit when a charge of 180 C passes a point in a circuit in 2 minutes is

A. 1:00 AM
B. 2:00 AM
C. 3:00 AM
D. 1.5 A
Answer» D. 1.5 A
discuss
147.

Electrons which are free to move around are also called

A. conduction electrons
B. valence shell electrons
C. inner electrons
D. electron sea
Answer» A. conduction electrons
discuss
148.

Number of conduction electrons per unit volume is

A. electron number
B. number density
C. proton number
D. neutron number
Answer» B. number density
discuss
149.

Current in a circuit if resistance of 15 Ω and potential difference of 3.0 V is applied across it's ends is

A. 1 A
B. 2 A
C. 0.5 A
D. 0.20 A
Answer» D. 0.20 A
discuss
150.

Number density for copper is {{}}

A. 10-29 m-3
B. 10 30 m-3
C. 10 29 m-3
D. 10 20 m-3
Answer» C. 10 29 m-3
discuss

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