IB Physics Fun

Question 1

Which of the following can be reduced by repeating large amounts of experimental trials?

Accepted Answer

Random Errors

Question 2

Which type of decay changes the nucleon number of the decaying element?

Accepted Answer

Alpha Decay

Question 3

What are the units of electromotive force?

Accepted Answer

Volts

Question 4

Which gas law is this

Accepted Answer

Gay-Lussac's Law

Question 5

An object is moving in circular uniform motion, which of the following correctly describes its acceleration

Accepted Answer

I, II, and III

Question 6

What quantity can be expressed with units of W m-2 ?

Accepted Answer

Intensity

Question 7

What can be deduced from this acceleration vs displacement graph for an object in motion?

Accepted Answer

The object is in simple harmonic motion

Question 8

In which interaction is the conservation of strangeness violated?

Accepted Answer

Weak nuclear interaction

Question 9

BONUS: What are these?

Accepted Answer

Maxwell's Equations

Question 10

The following is an electric field generated by 2 fixed point charges, what is true about the charge of these charges?

Accepted Answer

Both are positively charged

Question 11

A rocket travels at 0.9c in space based on an observer on Earth. Who measures the proper length of the rocket?

Accepted Answer

The person in the rocket

Question 12

BONUS: Who is this? (Fatima's Celebrity Crush)

Accepted Answer

Richard Feynman

Question 13

Which of the following changes will decrease the resistance of a wire?

Accepted Answer

Increasing the cross sectional area of the wire

Question 14

You observe Mr. MacNeill being able to hear Mr. Bangay in the hall without seeing him. What explains this?

Accepted Answer

The sound waves are diffracted

Question 15

A proton decays into a neutron during beta positive decay. What is the exchange particle in this reaction?

Accepted Answer

W+ boson

Question 16

Which of these quantities are vectors?

Accepted Answer

I and II

Question 17

What is 2.8 x 2 ?

Accepted Answer

6

Question 18

BONUS: Which graph shows the variation with displacement x of the velocity v of a body in simple harmonic motion? (IB)

Accepted Answer

A

Question 19

Why does the intensity of unpolarized light decrease by half when put into a polarizer?

Accepted Answer

The average value of cos2 θ is 1/2

Question 20

Fatima pushes Abdullah on an frictionless ice rink, if Abdullah uniformly accelerates forwards, what happens to Fatima?

Accepted Answer

She uniformly accelerates backwards with a different magnitude

Question 21

Two objects with the same mass collide and both come to rest after the collision. Which is guaranteed to be true?

Accepted Answer

Both objects must have the same speed beforehand

Question 22

The following is a heating curve. What does the line RS represent?

Accepted Answer

The time interval when the substance changes state

Question 23

Julia fires a rocket in the air. What happens to the horizontal velocity during its motion assuming no air resistance?

Accepted Answer

No change

Question 24

The following is a snapshot of a longitudinal wave. What does B indicate?

Accepted Answer

Centre of compression

Question 25

What albedo value does a black body radiator have?

Accepted Answer

0

Question 26

A force acting on a chair is Sara's weight. What force completes the force pair according to Newton's Third Law?

Accepted Answer

The pull of her onto the Earth

IB Physics Fun

Questions 26

IB Physics Fun

Questions 26