Question 1
Two mirrors are inclined at 600 to each other as shown:
Complete the ray diagram to show how it travels after striking the two mirrors and find the angle of reflection on each surface.
Answer
Question 2
Other than penetrating powers, state two differences between soft and hard x-rays
Answer
Hard X - ray have short wavelength and are produced at high voltages.
Soft X - rays have longer wavelength and are produced at lower voltages
Soft X - rays have longer wavelength and are produced at lower voltages
Question 3
Two capacitors of capacitance 2µ F and 1µ F are connected in parallel. A p.d of 3V is applied across them. Find the energy stored in the combination.
Answer
Question 4
The figure below shows a wave profile for a wave whose frequency is 2HZ
Determine the value of t3 (s).
Answer
Question 5
Give a reason why gases are poor transmitters of sound
Answer
Molecules in gases are much further apart