PSEB PHYSICS 10+1 CLASS SAMPLE PAPER SEPTEMBER 2024
Class-10+1 Paper Physics Time: 3 hrs. M.M. 70 Roll No..
Note:-
(1) All questions are compulsory.(2) Q. No. 1 has 28 parts, each part carries 1 mark.(3) Q. No. 2 to Q. No. 8 (Total 7 questions) carry 2 marks each.(4) Q. No. 9 to Q. No. 14 (Total 6 quetions) carry 3 marks each.(5) Q. No. 15 to Q. No. 16 (Total 6 questions) carry 5 marks each.
1. M.C.Q/True-False type.
(1) Dimensional formula of torque is
(a) [MºLºTº](b) [MLT⁻²](c) (ML²T⁻¹)(d) [ML²T⁻²]
(2) Negative vectors have
(a) Same imagnitude, same direction(b) Different magnitude and same direction(c) Same magnitude and opposite directions.(d) None of these
(3) What is magnitude of component of a force of 10 N in a directin perpendicular to this force.
(a) 5N(b) 5√3 N(c) 10 N(d) Zero
(4) A body is thrown vertically upwards. At highest point of path
(a) Acc. is zero(b) Velocity is zero(c) Acc. is maximum(d) Velocity is maximum
(5) Velocity-time graph for a body is a straight line parallel to time axis. It means.
(a) Body is at rest(b) Body is in uniform motion(c) Body is in accelerated motion(d) None of these
(6) Light year is a unit of
(a) Distance(b) Time(c) of two(d) Speed of light
(7) Which of the following can not be a resultant of magnitudes 10 N and B N
(a) 12N(b) 2N(c) 18 N(d) 1N
(8) One micron is equal to
(a) 10 ⁻¹º m(b) 10⁹ m(c) 10⁶ m(d) 10⁻⁶ m
(9) Slope of position time graph for a motion represents
(a) Displacement(b) Velocity(c) Acceleration(d) None of these.
(10) If ❘A+B❘ = ❘A-B❘ then angle between vectors A and B is
(a) 0°(b) 45°(c) 90°(d) 180°
(11) Direction of motion of a projectile fired parallel to horizontal at highest point of path is
(a) Parallel to horizontal(b) Vertical None of these(c) Inclined with horizontal(d) None of these
(12) Magnitude of a unit vector is
(a) Infinite(b) Zero(c) One(d) None of these
(13) A body is moving vertically upwards. Work done by gravitatinal force is
(a) Positive(b) Negative(c) Zero(d) None of these
(14) Which of the following is a scalar quantity
(a) Electric current(b) Force(c) Linear momentum(d) Impulse
(15) A bomb is dropped by a plane flying horizontally at some height. Trajectory of bomb is
(a) Circle(b) Parabola(c) Straight line(d) Hyperbola
(16) Correct relation between linear velocity (v) and angular velocity ( ⍵) is
(a) v = r. ⍵(b) v = r x ⍵(c) v = ⍵.r(d) v = w x r
(17) Which of the following pairs of forces can not give a resultant of 4 N.
(a) 2 N and 2 N(b) 2 N and 6 N(c) 2 N and 4 N(d) 2N and 8 N
(18) In uniform circular motion angle between velocity and acceleration is
(a) 45°(b) 90°(c) 0°(d) 180°
(19) Minimum number of unequal vectors which can give a zero resultant is
(a) 2(b) 3(c) 4(d) 1
(20) Intertia of a body depends upon its
(a) Size(b) Shape(c) Mass(d) All of these
(21) Which of the following is a self adjusting force
(a) Kinetic friction(b) Static friction(c) Limiting friction(d) Rolling friction
(22) Out of the following sets of forces which can not give a zero resultant
(a) 2N, 2N, 2N(b) 2N, 2N, 4N(c) 2N, 4N, 8N(d) 2N, 4N, 4N
(23) Which of the following has greatest magnitude
(a) Static friction(b) Kinetic friction(c) Limiting friction(d) Rolling friction
(24) Motion of a body under the action of a external force is accelerated motion. (True/False)
(25) Magnitude of component of a force in any direction may be greater than, force itself. (True/Flase)
(26) A body can have zero velocity but non-zero speed. (True/False)
(27) S.1 unit of mass is gram. (True/False)
(28) A body is moving along a circular path with a constant speed. It's motion is called uniform motion. (True /false)
2. Time period of a simple pendulum (t) depends upon its mass (m) length (1) and queleration due to gravity (g). By the method of dimensions derive a relation for time period.
OR
Acceleration of a body is measured 10 ms⁻². Find its value if unit of length is taken kilometre and that time of is taken minute.
3. What are characteristics of a standard unit.
4. What do you know about accelerated motion. Define acceleration.
OR
A body moving with a constant acceleration travells 21m in 5th second and 37 m in 8th second. Find initial velocity and acceleration of body.
5. What is limiting friction. Explain laws of limiting friction.
OR
For what value of n vectors A and B given below are perpendicular to each other. A=5i+6j-nk and B = 21-3j+4k
6. Prove that area under velocity time (vt) graph for uniformly accelerated motion represents displacement of body in that time interval.
7. What are absolute, relative and percentage error, explain with example.
OR
A potential diff v = (20 ± 2) volt, applied across a resistor gives a current 1 = (5±0.2) Ampere. Calculae percentage error in V, I and R.
8. What are advantages of S.I explain.
9. What are limitations of dimensional analysis.
10. What do you mean by uniform circular motion. Derive a relation for centripetal acceleration in uniform circular motion.
OR
A projectile is projected such that its kinetic energy at the top is 3/4th of initial KE. Calculate initial angle of projection of projectile.
11. What are concurrent forces. Explain condition for equilibrium of three forces acting at a point. What is Lami's theorem.
12. How will you calculate work done against a variable force. Calulate work done against gravitaltional force when a body is displaced from surface of earth to a height equal to radius of earth (R).
13. Explain subtraction of vectors
OR
If P=10N due east , Q=6N due west. Then find magnitude and direction of P+Q and P-Q.
14. Discuss motion of a projectile fired parallel to horizontal. Prove that its path is parabolic.
15. Two vectors P and Q are inclined at angle 𝜽. Find magnitude and direction of their resultant. Also dicuss special cases.
OR
Discuss motion of a projectile fired at some angle with horizontal. Derive relation for Time of flight, maximum height and horizontal range of projectile.
16. Explain Newton's three laws of motion. How will you show that Newton's Second Law is real law of motion.
OR
Define static friction, Kinetic friction and angle of repose. Derive a relation between angle of repose and coefficient of friction.
