Physics Quiz

Question 1:

Which of the following is true about an object in uniform circular motion?

a) The net force is zero.
b) The net torque is zero.
c) The linear speed is constant.
d) The angular speed is constant.

Question 2:

What happens to the resistance of a conductor when its length is doubled, keeping the material and cross-sectional area constant?

a) Doubles
b) Halves
c) Remains the same
d) Becomes zero

Question 3:

When light travels from a rarer medium to a denser medium, it experiences:

a) Refraction away from the normal.
b) Refraction towards the normal.
c) Reflection at an angle equal to the incident angle.
c) No refraction.

Question 4:

Two capacitors, one of capacitance C and the other 2C, are connected in series to a battery. The total effective capacitance will be:

a) C/3
b) 2C/3
c) 3C
d) C/2

Question 5:

The phenomenon of the splitting of light into its component colors when passing through a prism is known as:

a) Diffraction
b) Dispersion
c) Polarization
d) Interference

Question 6:

The energy generated by nuclear fusion in the sun is a result of:

a) Converting protons into neutrons.
b) Converting neutrons into protons.
c) Converting hydrogen into helium.
d) Converting helium into hydrogen.

Question 7:

The particle having the same charge as an electron but with a mass nearly 2000 times that of an electron is called a:

a) Proton
b) Neutron
c) Positron
d) Alpha particle

Question 8:

In a parallel plate capacitor, if the distance between the plates is halved while keeping the area and charge constant, the capacitance will:

a) Double
b) Halve
c) Remain the same
d) Quadruple

Question 9:

Which of the following electromagnetic waves has the highest frequency?

a) Radio waves
b) Microwaves
c) X-rays
d) Infrared waves

Question 10:

Which of the following laws describes the cooling of a hotter body to the temperature of its surroundings?

a) Newton's law of cooling
b) Ohm's law
c) Boyle's law
d) 9Kepler's law