General Science Jkssb Physics Set 1 Mcqs (448 MCQs)

Question 81 Discuss

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Which of the following is NOT a vector quantity?

A

Acceleration

B

Velocity

C

Force

D

Mass

Answer & Explanation

Correct Option: D

Mass is a scalar quantity as it only has magnitude and does not depend on direction.

Question 82 Discuss

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Rama experiences a drop in temperature as she is getting higher and higher in the mountains while trekking. What could be the cause of this?

A

Rama's fatigue

B

Less water

C

Lower air pressure at altitude

D

Higher air pressure at altitude

Answer & Explanation

Correct Option: C

As altitude increases, air pressure decreases; this causes air to expand and cool down, a process known as adiabatic cooling.

Question 83 Discuss

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What is u in the equation s = ut + 1/2at2, which represents the position-time relation?

A

Uniform acceleration

B

Initial velocity

C

Change in momentum

D

Speed of the object

Answer & Explanation

Correct Option: B

In kinematics equations, 'u' typically denotes the velocity of the object at time t=0, known as the initial velocity.

Question 84 Discuss

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What is the frequency of an object if we know that it oscillates 100 times in 5 seconds?

A

20 Hz

B

5 Hz

C

500 Hz

D

25 Hz

Answer & Explanation

Correct Option: A

Frequency is calculated by dividing the number of cycles by the total time; here, 100 oscillations / 5 seconds = 20 Hz.

Question 85 Discuss

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Meera shifted to a new house and was fixing light bulbs. Select the correct option that describes what happens to a fused bulb.

A

The switch for the bulb was not turned on

B

Meera did not fix the bulb to the holder properly

C

The filament inside it was broken

D

There was no connection between the bulb holder and the switch

Answer & Explanation

Correct Option: C

A bulb is 'fused' when the tungsten filament breaks due to wear or a power surge, which opens the circuit and prevents current flow.

Question 86 Discuss

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The SI unit of which fundamental physical quantity is named in the honour of Charles Augustin Coulomb?

A

Electric current density

B

Electric field

C

Electric charge

D

Electric power

Answer & Explanation

Correct Option: C

Charles-Augustin de Coulomb was a French physicist whose research on electrostatic attraction and repulsion led to the naming of the unit of charge after him.

Question 87 Discuss

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If ' G ', ' M ' and ' R ' represent the universal gravitation constant, mass of the earth and radius of the earth, respectively, then which of the following is the correct expression for the acceleration due to gravity ( g ) on the surface of the earth?

A

GM/R2

B

GM2/R

C

GM/R

D

GMR2

Answer & Explanation

Correct Option: A

The formula g = GM/R² is derived from Newton's Law of Gravitation, showing that gravity depends on the mass and radius of the planet.

Question 88 Discuss

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Sahil is pulled with 100 N East and 150 N West. What is the net force and direction of movement?

A

50 N , Monisha

B

250 N , will not move

C

50 N , Maya

D

-50 N , Maya

Answer & Explanation

Correct Option: C

Net force is the vector sum of forces: 150 N (West) - 100 N (East) = 50 N toward the West (Maya).

Question 89 Discuss

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Sometimes when heated, solid changes into liquid at normal atmospheric pressure on reaching its melting point. What is the name of the amount of heat required?

A

Latent heat of diffusion

B

Latent heat of fusion

C

Latent melting point

D

Latent change of state point

Answer & Explanation

Correct Option: B

Latent heat of fusion is the energy required to change a substance from solid to liquid state without changing its temperature.

Question 90 Discuss

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The Greek letter 'Omega' (Ω) is used to represent which physical quantity in the International System of Units (SI)?

A

Electric displacement field

B

Electrical conductance

C

Electric potential difference

D

Electric resistance

Answer & Explanation

Correct Option: D

The ohm (symbol: Ω) is the SI unit of electrical resistance, named after Georg Simon Ohm.

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Practice Questions

Which of the following is NOT a vector quantity?

Answer & Explanation

Rama experiences a drop in temperature as she is getting higher and higher in the mountains while trekking. What could be the cause of this?

Answer & Explanation

What is u in the equation s = ut + 1/2at2, which represents the position-time relation?

Answer & Explanation

What is the frequency of an object if we know that it oscillates 100 times in 5 seconds?

Answer & Explanation

Meera shifted to a new house and was fixing light bulbs. Select the correct option that describes what happens to a fused bulb.

Answer & Explanation

The SI unit of which fundamental physical quantity is named in the honour of Charles Augustin Coulomb?

Answer & Explanation

If ' G ', ' M ' and ' R ' represent the universal gravitation constant, mass of the earth and radius of the earth, respectively, then which of the following is the correct expression for the acceleration due to gravity ( g ) on the surface of the earth?

Answer & Explanation

Sahil is pulled with 100 N East and 150 N West. What is the net force and direction of movement?

Answer & Explanation

Sometimes when heated, solid changes into liquid at normal atmospheric pressure on reaching its melting point. What is the name of the amount of heat required?

Answer & Explanation

The Greek letter 'Omega' (Ω) is used to represent which physical quantity in the International System of Units (SI)?

Answer & Explanation

General Science

Topics

Browse Topics

Practice Questions

Which of the following is NOT a vector quantity?

Answer & Explanation

Rama experiences a drop in temperature as she is getting higher and higher in the mountains while trekking. What could be the cause of this?

Answer & Explanation

What is u in the equation s = ut + 1/2at2, which represents the position-time relation?

Answer & Explanation

What is the frequency of an object if we know that it oscillates 100 times in 5 seconds?

Answer & Explanation

Meera shifted to a new house and was fixing light bulbs. Select the correct option that describes what happens to a fused bulb.

Answer & Explanation

The SI unit of which fundamental physical quantity is named in the honour of Charles Augustin Coulomb?

Answer & Explanation

If ' G ', ' M ' and ' R ' represent the universal gravitation constant, mass of the earth and radius of the earth, respectively, then which of the following is the correct expression for the acceleration due to gravity ( g ) on the surface of the earth?

Answer & Explanation

Sahil is pulled with 100 N East and 150 N West. What is the net force and direction of movement?

Answer & Explanation

Sometimes when heated, solid changes into liquid at normal atmospheric pressure on reaching its melting point. What is the name of the amount of heat required?

Answer & Explanation

The Greek letter 'Omega' (Ω) is used to represent which physical quantity in the International System of Units (SI)?

Answer & Explanation

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