Home
Class 12
PHYSICS
A clock that keeps correct time at 20^(@...

A clock that keeps correct time at `20^(@)C`, is subjected to `40^(@)C`. If coefficient of linear expansion of the pendulum is `12xx10^(-6) ""^(@)C^(-1)`, how much time will it gain or lose ?

A

`10.3" s day"^(-1)`

B

`"20.6 s day"^(-1)`

C

`"5 s day"^(-1)`

D

`"20 min day"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

A clock which keeps correct time at 20^(@)C is subjected to 40^(@)C. If coefficient of linear expansion of the pendulum is 12xx10^(-6)//"^(@)C. How much will it gain or loss in time ?

A clock with a metal pendulum beating seconds keeps correct time at 0^(@)C. If it loses 12.5s a day at 25^(@)C the coefficient of linear expansion of metal pendulum is

Coefficient of areal expansion of a solid is 2xx10^(-5).^(@)C^(-1) . Calculate its coefficient of linear expansion.

A clock which keeps correct time at 25^@C , has a pendulum made of brass. The coefficient of linear expansion for brass is 0.000019.^@C^(-1) . How many seconds a day will it gain if the ambient temperature falls to 0.^@C ?

An iron bar 10 cm in length is kept at 20^@C . If the coefficient of linear expansion of iron is alpha = 11 xx 10^(-6).^(@)C^(-1) , then at 19^(@)C it will be

The coefficient of linear expansion of gold is 14 xx 10^(-6)//""^(@)C . Find the coefficient of linear expansion on Fahrenheit scale.

(a) The brass scale of a barometer gives correct reading at 0^(@)C . Coefficient of linear expansion of brass is 2.0xx10^(-5)//^(@)C . The barometer reads 75cm at 27^(@)C . What is the atmospheric pressure at 27^(@)C ? (b) A barometer reads 75.0cm on a steel scale. The room temperature is 30^(@)C . The scale is correctly graduated for 0^(@)C . The coefficient of linear expansion of steel is alpha=1.2xx10^(-5)//^(@)C and the coefficient of volume expansion of mercury is gamma=1.8xx10^(-4)//^(@)C . Find the correct atmospheric pressure.

A uniform metal rod of 2mm^(2) area of cross section is heated from 0^(@)C to 20^(@)C . The coefficient of linear expansion of the rod is 12xx10^(-6)//""^(@)C . Its Young's modulus of elasticity is 10^(11)N//m^(2) , then the energy stored per unit volume of rod is,

When a liquid in a glass vessel is heated, its apparent expansion coefficient is 10.30 xx 10^(-4) .^(@)C^(-1) . When the same liquid is heated in a metal vessel, its apparent expansion coeffiecient is 10.06 xx 10^(-4) .^(@)C^(-1) . If the coefficient of linear expansion of glass = 9 xx 10^(-6) .^(@)C^(-1) , what is the coefficient of linear expansion of metal?

At 50^(@)C , a brass rod has a length 50 cm and a diameter 2 mm . It is joined to a steel rod of the same length and diameter at the same temperature . The change in the length of the composite rod when it is heated to 250^(@)C is (Coefficient of linear expansion of brass = 2.0 xx 10^(-5)"^(@) C^(-1) , coefficient of linear expansion of steel = 1.2 xx 10^(-5) "^(@) C^(-1) )