PLUS ONE PHYSICS

+1 PHYSICS -REVISION TEST SERIES -1

PHYSICAL WORLD,UNITS AND MEASUREMENTS

Time: 1 hr Max.Mark - 30

Question numbers from 1 to 5, Answer all Question numbers from 11 to 16, Answer
Each carry one score.
any five. Each carry three score.
11)Find the dimension of the constant

1) Weakest force in nature a & b in the equation.

is...............................(1)  p  a V  b RT
 V2
2) Dimensional formula for FORCE 

is……………………(1) Where P-pressure, V-volume ,

3) Parsec is the unit of……………..(1) T -temperature ………….(3)

4) The number of significant figures in the 12)The observed readings in an experiment

measurement 5.00 is....................(1) are 2.63 s, 2.56 s, 2.42 s, 2.71 s and 2.80

5) 1 fermi = ........................m (1) s. Calculate absolute error and %

(Score:5 x 1 =5) error.(2)

Questions numbers from 6 to 10.Answer all 13)A boy recalls the relativistic

Each carry two score. Equation for mass almost correctly but
forgets to put the constant ‘C’.velocity of
6) Write the dimensional formula for
light . Guess where to put the missing C
a) Momentum(p) ………(1)
b)Planck’s Constant (h) …(1) using dimensional formula analysis.

7) Check the correctness of given m = m0 (3)

(1  V 2 )1/ 2

equation 14)Time period of a simple pendulum

a) F=ma where F is force,m-mass, depends upon mass of the bob m,
acceleration due to gravity g, and
. a -acceleration (1) length of pendulum-l,
derive expression for time period (3)
b) v=u+at where v-final velocity,
15)By Using principle of homogeneity
u- initial velocity a-acceleration,

t-time (1) checks the correctness of given equation.

8) The sun's angular diameter is measured h  2d
rg cos
to be 1920’’ . The distance x of sun
from earth is 1.496 x 1011 m. What is Where   surface tension

the diameter of Sun? (2) d  density r  radius

9) The initial and final temperature of . g  acceleration due to gravity (3)

same body are (25 + 0.1 )o C and 16)Complete following calculations in

(50 + 0.2)°C. What is the % Error in correct number of significant figures (3)

rise in temperature? (2) a) 2.345 + 9.84 =

10) If x  a ; find the % error in x ; % b) 1.35 × 5.4 =

b c) 72.4 - 5.234 =

error in a is 1 % and % error in b is (Score: 5x 3 = 15)

3% (2)

(Score: 5 x 2= 10)

Prepared by :- TWAYYIB ABOOBACKER TP , HSST PHYSICS CHMHSS-POOKOLATHUR 1