Subject:
Physics(Full Book) Class: X Total Marks: 12
Name:_______________________ Date:_______________
1)
The time period of a simple pendulum can be calculated by:
(a) T = 2p √l/g (b) T = 2p √g/l (c) T = 2p√m/k (d) T = 2p√k/m
2)
The intensity level of the train siren is:
(a) 150 dB (b) 130 dB
(c) 100 dB (d) 120 dB
3)
The index of refraction depends on
(a) the focal length (b)
the speed of light (c) the image
distance (d) the object distance
4)
Two charged spheres are separated by 2 mm. Which of the following would
produce the greatest attractive force?
(a) +1q
and +4q (b) –1q and –4q (c)
+2q and +2q (d) +2q and –2q
5) What is the voltage across a 6 W resistor when 3 A of current passes through
it?
(a) 2 V (b) 9 V
(c) 18 V (d) 36 V
6)
Law of
electromagnetic induction and electrolysis were presented by:
a)
Simon Ohm b) George Coulomb c) Newton d) Michael Faraday
7)
The
direction of induced e.m.f. in a circuit is in accordance with conservation
of:
a) mass b)charge c) momentum d) energy
8)
If X = A.B, then X is 1 when:
a) A and B are 1 b) A or B is 0
c) A is 0 and B is 1 d) A is 1 and B is 0
9) 1MB =
a) 1022 KB b)1023 KB c) 1024 KB d)1025 KB
10) What happens to the atomic number of an element that emits one alpha particle?
(a) increases
by 1 (b) stay the same (c) decreases by 2 (d) decreases by 1
11) Which statement is
true about the magnetic poles?
a) unlike poles repel b) like poles attract c) magnetic poles do not affect each other d) a single magnetic pole does not exist
12) AND gate can be
formed by using two:
a) NOT gates b) OR gates
c) NOR gates d)
NAND gates
Subject: Physics 10TH Class:
X Total
Marks:12+ 48=60
2. Answer any FIVE (5) of the following
questions. (5×2=10)
a) Define vibratory
motion (oscillatory motion).
b) What are audible
frequency range for young children and old people?
c) Define Endoscope.
Also, write its types.
d)
What is the principle to find the
direction of the magnetic field? State it.
e) Explain NOR Gate
with help of a truth table.
f) What is meant by
background radiation?
3.
Answer briefly any five (5) parts of the
following. (5×2=10)
a)
Explain the motion of the ball in the bowl and perform Simple Harmonic Motion.
b)
Name and define the unit of the intensity level of sound.
c)
Define the power of the lens. Also, define the unit of power of the lens.
d)
What is the principle to find the direction of the magnetic field? State
it.
e)
Which is more reliable floppy or a hard disk?
f)
Write the chemical equation for nuclear fusion.
4.
Write short answers to any FIVE (5) of the
following questions. (5×2=10)
a.
What are the important features of SHM?
b.
What is meant by total internal reflection? Write its conditions.
c.: Draw a ray diagram to illustrate reflection at a plane surface?
d.
Describe the role of deflecting plates in cathode ray
oscilloscope?
e.
Write names of four output devices of a computer.
f.
Prove that: 1 kWh = 3.6 ´ 106 J
Note: Attempt any Two ( 2 ) questions. (2×9=18)
1. (a) The time period of a simple pendulum is 2s. What will be its length on Earth? What will be its length on the moon if gm = ge/6? Where ge = 10ms-2.
(b) What is meant by mutual induction? Describe an experiment.
2.
(a) Define specific resistance (Resistivity).On which factor does
resistance R of a conductor depend. Calculate its value.
(b) Carbon-14 has a half-life of 5730 years. How long
will it take for the quantity of carbon -14 in a sample to drop to one-eighth
of the initial quantity?
3.
(a) Explain the uses of the Logic Gate.
(b) What are the risks of ICT to society and the environment?
