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

General Science

jkssb physics set 1 mcqs

Download PDF

Topics

jkssb physics set 1 mcqs jkssb chemistry set 1 mcqs jkssb biology set 1 mcqs

Practice Questions

448 Total
Question 381 Discuss
Ask a Friend

Bernoulli's theorem is based on the law of conservation of:

A
mass
B
momentum
C
energy
D
angular momentum

Answer & Explanation

Correct Option: C

Bernoulli's principle states that for an incompressible fluid, the sum of pressure, kinetic, and potential energy per unit volume is constant.
Question 382 Discuss
Ask a Friend

If an object is placed between two parallel plane mirrors, the number of images formed will be:

A
two
B
four
C
zero
D
infinite

Answer & Explanation

Correct Option: D

Because the angle between mirrors is
Question 383 Discuss
Ask a Friend

A body is in static equilibrium when the net:

A
force acting on it is zero
B
torque acting on it is zero
C
force and net torque are both zero
D
velocity is constant

Answer & Explanation

Correct Option: C

Static equilibrium requires translational equilibrium
Question 384 Discuss
Ask a Friend

The speed of sound in air increases with an increase in:

A
pressure
B
temperature
C
density
D
wavelength

Answer & Explanation

Correct Option: B

The speed of sound is proportional to the square root of the absolute temperature of the medium.
Question 385 Discuss
Ask a Friend

The time period of a satellite revolving very close to the Earth's surface is approximately:

A
24 hours
B
84 minutes
C
60 minutes
D
48 hours

Answer & Explanation

Correct Option: B

A satellite in Low Earth Orbit (LEO) near the surface has a period deter
Question 386 Discuss
Ask a Friend

The mass of a body is different from its weight because:

A
mass is a variable quantity
B
weight is a constant quantity
C
mass is a scalar and weight is a vector quantity
D
mass depends on gravity

Answer & Explanation

Correct Option: C

Mass is an intrinsic property representing matter content, while weight is the force of gravity acting on that mass.
Question 387 Discuss
Ask a Friend

Oil rises up the wick in a lamp due to:

A
viscosity of oil
B
capillary action
C
surface tension
D
pressure difference

Answer & Explanation

Correct Option: B

Capillary action, caused by adhesion and surface tension, pulls the oil through the fine pores of the wick.
Question 388 Discuss
Ask a Friend

The working of a rocket is based on:

A
keplers laws
B
newtons law of gravitation
C
newtons third law of motion
D
archimedes principle

Answer & Explanation

Correct Option: C

A rocket expels gas at high velocity in one direction to generate thrust in the opposite direction.
Question 389 Discuss
Ask a Friend

The energy stored in a stretched spring is:

A
kinetic energy
B
chemical energy
C
potential energy
D
electrical energy

Answer & Explanation

Correct Option: C

Work done against the restoring force of the spring is stored as elastic potential energy.
Question 390 Discuss
Ask a Friend

Which of the following is used in a solar cooker to trap heat?

A
plane mirror
B
convex lens
C
glass sheet
D
concave lens

Answer & Explanation

Correct Option: C

The glass sheet creates a greenhouse effect by allowing visible light in but trapping long-wave infrared radiation.
Previous Next