- Define simple harmonic motion.
- Find the frequency of pendulum 1m long at a location where g= 10.0 ms-2.
- Differentiate two categories of waves.
- What is quality?
- What is intensity of sound if intensity level is 80 dB.
- State law of refraction.
- Define power of lens.
- What is hypermetropia?
- Define volt.
- What is capacitor?
- Define conventional current.
- Define insulators.
- Define kilo watt hour.
- What is damp condition?
- Name some uses of oscillators.
- What is And gate and draw truth table.
- Write a equation for β decay.
- Define nuclear fusion.
- Find the number of protons and neutrons 613X.
- Write the name of hydrogen isotopes.
- Differentiate between IT and telecommunication.
- Write a note on fax machine.
- Define secondary storage devices.
- Write four advantages of e-mail
- Write the factors affecting on induced e.m.f.
- What is armature?
- Define right hand rule.
- Write Fleming’s left hand rule.
Long Question
- An object 30cm tall is located 10.5cm from a concave mirror with focal length 16cm. Where is image located?
- Write five uses of Ultrasound waves.
- Derive the formula for the equivalent capacitor for a series of a number of capacitors.
- A current of 3mA is following through a wire for 60s. What is charge following through a wire?
- Define fission reaction and explain it.
- A power station generates 500 MW of electrical power which is fed to a transmission line. What current would flow in the transmission line, if the input voltage is 250 kV?
- Describe the components of computer based information system.
- A transformer, designed to convert the voltage from 240V a.c mains to 12V, has 4000 turns on the primary coil. How many turns should be on the secondary coil? If the transformer were 100% efficient, what current would flow through the primary coil when the current in the secondary coil was 0.4A?
- A 100W lamp and a 4kW water heater are connected to a 250V supply. Calculate (a) the current in each appliance (b) the resistance of each appliance when in use.
- An object 10cm high is placed at a distance of 20cm from a concave lens of focal length 15cm. Calculate the position and size of the image. Also state the nature of the image.
- A doctor counts 72 heartbeats 10 1 mint. Calculate the frequency and period of the heartbeats.
- If 100 waves pass through a point of a medium in 20 seconds, what is the frequency and the time period of the wave? If its wavelength is 6cm, calculate the wave speed.
- Write a note on compound microscope.
- Define Ohm’s law and state its characteristics.
- How D.C motor works?
- Write a detail note on CRO.
- What is computer and how it works?