# Phy 191 Past Questions Page 3

In this article we will be uploading the ** PHY 191** Past Question Paper and the possible solution, if the solutions are not yet complete please contact us on whatsapp.

## PHY 191

#### QUESTION NUMBER 21

Supposed the formula relating E,R,r and i is I= E/R+r, where i and R are variables and E and r are constants— deduce the intercept

A. r/E

B. Rr/1

C. 1/E**D. r/E**

ANSWER: D

#### QUESTION NUMBER 22

Given that L=20.00+- 0.05cm and w=15.00=-0.05cm. what is the maxmimum error in the sum

A. **0.1cm**

B. 0.01cm

C. 0.05cm

D. 0.001cm

ANSWER: A

#### QUESTION NUMBER 23

consider the expression T^2 A/B LB3, where T^2 and L^3 are variables, if L^3 is plotted as abscissa and T^2 as ordinate, the slope of resulting graph is

A**. B/A**

B. 1/A

C. 1/B

D. A/B

ANSWER: A

#### QUESTION NUMBER 24

What is the reading accurancy of a vernier calliper

A. 0.01cm

B. 0.001cm

C. **0.01cm**

D. 0.0001cm

ANSWER: C

#### QUESTION NUMBER 25

If the circular scale of micrometer screw guage is divided into 100 equal parts and it moves 0.5mm in one revolution, the pitch is

A. 100

B. 0.01

C. 0.5

D. 25

ANSWER: C

#### QUESTION NUMBER 26

If the circular scale of micrometer screw guage is divided into 100 equal parts and it moves 0.5mm in one revolution, find the least count of the guage

A. 0.5

B. 0.05

C. 0.01

D. **0.005**

ANSWER: D

#### QUESTION NUMBER 27

A graduated cylinder is marked every millitre. how precise a measurement can you make with this instrument**A. +- 0.1ml**

B. +-0.5ml

C. +-1.0ml

D. +-0.5cl

ANSWER: A

#### QUESTION NUMBER 28

If X=10.10+-0.05; Y=6.03+-0.01; Z=3.40+-0.02; and U=X+Y+Z, Calculate the maximum error in U?**A. 19.17+-0.08**

B. 13.094+-0.3

C. 13.094+-0.2

D. 19.094+-0.2

ANSWER: A

#### QUESTION NUMBER 29

Calculate the standard error in U

A. 19.09+_0.03**B. 19.17+-0.06**

C. 19.27+-0.08

D. 19.17+-0.07

ANSWER: B

#### QUESTION NUMBER 30

Least count of screw guage is

A. 0.01cm

B. 0.5cm

C. 0.01cm

D. **0.01mm**

ANSWER: D