PAPER = Physics, CLASS = 10TH, Total MARKS =70 Name;
Mcqs Q.s(Fill on Bubble sheet), Time:10m, MARKS = 20
1)
Electric field
lines cross each other.
a)
always b) in strong field c) in weak field d) never
2) Capacitance is defined as:
a) VC b) QV c) Q / V d) V / Q
3) Volt is equal to;
a) JC b)
JC2 c) JC-2 d) J / C
4) The symbol of Charge is
a) C b)
I c) Q d) K
5) Power rate of the lamp connected with
12V it carries A
is
a) 4.8W b) 14.5W c) 30W d) 60W
6) Electric potential and e.m.f are:
a) same terms b) different terms c) have same units d)
both a & c
7) By doubling the voltage in the electric
circuit we double the
a) current b) power c)
resistance d) both a & b
8) Which statement is true about
magnetic poles:
a) unlike repel b) like attract c) don’t affect d) single pole not exist
9) Turn ratio of the transformer is 10. It
means:
a) Is =10 Ip b) Ns = Np /10 c) Ns =10 Np d) Vs = Vp /10
10) AND gate can be formed by using
two gates:
a) NOT b) NOR c) OR d) NAND
SHORT Q.S (Attempt any 10
Q.S) (20)
Q.1; There are two types of electric
charges, justify this statement.
Q.2; Describe Capacitor as an energy
store device.
Q.3; Find electric intensity due to a
point charge q.
Q.4; Define Ohm’s law, Give its
limitations.
Q.5; Give an idea of energy dissipation in a
resistor for example.
Q.6; Write any four differences b /w A.C
and D.C
Q.7; State that a current-carrying coil
in a magnetic field experiences a torque.
Q.8; What is an electric motor? Write the working principle of the D.C. motor.
Q.9; How does an induced e.m.f relate to the conservation of energy.?
Q.10; Give an idea of mutual induction.
Define the SI unit of mutual inductance.
Q.11; What do you understand by digital
and analog quantities.?
Q.12; Describe the process of thermionic
emission in C.R.O
LONG QUESTIONS (Attempt any 3 Q.S)
(30)
Q.1 (a); Describe four
different types of Capacitors and
their uses.
b); q1 = 10 µC and q2 = 5 µC are placed 150 cm
apart. Find the coulomb’s force and its direction.
Q.2 (a); Explain Specific resistance and derive its
relation.
b); Find resistance if 1 m copper wire
has a 2 mm diameter.
Q.3 (a); Draw a labeled
diagram to illustrate the construction and working of the A.C. generator.
b); A step-down transformer has a turn
ratio of 1:100, primary voltage is 170 V and current is
1.0 mA. Find the current in
secondary.?
Q.4 (a); Write a truth table and
Draw a diagram of NOT, NAND, and NOR Gates.
(b); 0.8N repulsion force b/w two
identical 0.1m apart positive charges. Find the value of each charge.
