SAMPLE TEST
PAPER - I
- Find out the reading of the DC Ammeter connected in the
above circuit. If we now replace the 100 ohm resistor with a 10 kilo-ohm
resistor what will be the new reading of the
meter.
2+1
- What are the factors on which resistance of a conductor
depend? Also state the nature of dependence.
2+1
- What are renewable and non-renewable sources of energy?
List some examples. What are fossil fuels?
2+1+1
- State the laws of
reflection. 2
- A current carrying conductor placed in a magnetic field
of 0.3T experiences a force of 100N. If the length of the conductor is 50cm,
find out the magnitude of current flowing in
it.
3
- State Fleming’s right hand rule for the direction of
induced current. 2
- A convex lens has a power of 0.05D. Find out the nature,
size and position of the image when an object of height 25cm is placed at a
distance of 30cm in front of the
lens.
3
- List the differences between a bar magnet and an
electromagnet. 2
- What is the working principle of an electric motor? Give
the construction and working of a D.C. Motor.
2+3
- Draw ray diagrams giving the
nature, position and size of the image in the following cases:- a) Object
placed between pole and focus of a concave mirror
- b) Object placed
between focus and centre of curvature
- Explain TOTAL INTERNAL
REFLECTION with the example of formation of
mirage.
3+2
- Explain the working of an
A.C. generator. Where is the constructional difference between A.C. and D.C.
generator? 4+1
- What are two common defects
of Human Eye and how is it resolved? 2+2
- What do you mean by
electroplating? State Faraday’s laws for Chemical Effects of
Current.
2+2
- What are the choices for a
good fuel? Give few examples of good fuel and some uses of
them.
2+3
- Explain the action of a
compound microscope. 5
- State Fleming’s left hand rule for the direction of
magnetic force. 2
- Why is concave mirror called
a converging mirror and convex mirror is called a
- Diverging
mirror? 2
- Derive the laws of series and parallel connection of
resistances. 5
- Explain heating effect of electric current and formulate
mathematically. 3
- A current of 4 amperes flows through a 12V battery for
10 minutes. How much energy is consumed during this time?
2