General Science Jkssb Physics Set 1 Mcqs (448 MCQs) | JKSSB & SSC Quiz

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jkssb physics set 1 mcqs

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Practice Questions

448 Total
Question 51 Discuss
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Which part of the bifocal lens facilitates near vision?

A
Upper part with concave lens
B
Lower part with concave lens
C
Upper part with convex lens
D
Lower part with convex lens

Answer & Explanation

Correct Option: D

In bifocal glasses, the lower segment contains a convex lens to provide the extra refractive power needed for reading and close-up tasks.
Question 52 Discuss
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Which of the following is the SI unit of velocity?

A
kg/m
B
kg/s
C
s/m
D
m/s

Answer & Explanation

Correct Option: D

Velocity is defined as the rate of change of displacement, and its SI unit is meters per second (m/s).
Question 53 Discuss
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Watt is the unit of .

A
Energy
B
Momentum
C
Resistance
D
Power

Answer & Explanation

Correct Option: D

One Watt is defined as the rate of doing work at one joule per second, named after the Scottish inventor James Watt.
Question 54 Discuss
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In which unit, frequency is measured?

A
Hertz (Hz)
B
Hour(hr.)
C
Decibel
D
Minute(min.)

Answer & Explanation

Correct Option: A

Frequency, the number of cycles per unit time, is measured in Hertz (Hz), which represents cycles per second.
Question 55 Discuss
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When something accelerates along a circular path, keeps it going in the circle.

A
Friction
B
Velocity
C
Centripetal force
D
Elastic force

Answer & Explanation

Correct Option: C

Centripetal force is a center-seeking force that acts on a body moving in a circular path and is directed toward the center around which the body is moving.
Question 56 Discuss
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Which Law of Newton states that for every action (force) in nature there is an equal and opposite reaction?

A
4th
B
1st
C
3rd
D
2nd

Answer & Explanation

Correct Option: C

Newton's Third Law states that forces always occur in pairs; if object A exerts a force on object B, B exerts an equal and opposite force on A.
Question 57 Discuss
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The loudness of sound is measured in which unit?

A
Hertz (Hz)
B
Sound intensity
C
Watt/sq. Metre ( w/m2 )
D
Decibel (dB)

Answer & Explanation

Correct Option: D

The decibel is a logarithmic unit used to measure the intensity or loudness of sound relative to a reference level.
Question 58 Discuss
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The number of oscillations per second is called of oscillation.

A
pitch
B
amplitude
C
hertz
D
frequency

Answer & Explanation

Correct Option: D

Frequency is the physical quantity that counts the number of occurrences of a repeating event per unit of time.
Question 59 Discuss
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Which of the following device is used to measure the distance travelled by the vehicle?

A
Speedometer
B
Tachometer
C
Odometer
D
Fuel gauge

Answer & Explanation

Correct Option: C

An odometer is an instrument that tracks the total mileage or distance traveled by a vehicle since it was manufactured.
Question 60 Discuss
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Which of the following is the SI unit of temperature?

A
Celsius ( ∘C)
B
Fahrenheit (F)
C
Kelvin (K)
D
Pascal (Pa)

Answer & Explanation

Correct Option: C

Kelvin is the primary unit of temperature in the International System of Units, starting from absolute zero.
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