Advertisements
Advertisements
प्रश्न
As the temperature is increased, the time period of a pendulum
विकल्प
increases proportionately with temperature
increases
decreases
remains constant
Advertisements
उत्तर
increases
In general, the time period of a pendulum,t, is given by
t = `1/(2pi) sqrt(1/g)`
When the temperature (T) is increased, the length of the pendulum (l) is given by,
l =l0(1+∝T),
where l0 = length at 0 oC
∝ = linear coefficient of expansion.
Therefore, the time period of a pendulum will be
t = `1/(2pi) sqrt ((l_0(1+∝T))/g)`
Hence, time period of a pendulum will increase with increase in temperature.
APPEARS IN
संबंधित प्रश्न
The dimensions of emissive power are ______.
The light from the Sun is found to have a maximum intensity near the wavelength of 470 nm. Assuming the surface of the Sun as a black body, the temperature of the Sun is _____________.
[Wien's constant b = 2 .898 x l0- 3mK]
What is the temperature of the triple-point of water on an absolute scale whose unit interval size is equal to that of the Fahrenheit scale?
A spinning wheel is brought in contact with an identical wheel spinning at identical speed. The wheels slow down under the action of friction. Which of the following energies of the first wheel decreases?
(a) Kinetic
(b) Total
(c) Mechanical
(d) Internal
In a calorimeter, the heat given by the hot object is assumed to be equal to the heat taken by the cold object. Does it mean that heat of the two objects taken together remains constant?
A body A is placed on a railway platform and an identical body B in a moving train. Which of the following energies of B are greater than those of A, as seen from the ground?
(a) Kinetic
(b) Total
(c) Mechanical
(d) Internal
Should a thermometer bulb have large heat capacity or small heat capacity?
When a hot liquid is mixed with a cold liquid, the temperature of the mixture ____________ .
A metre scale made of steel is calibrated at 20°C to give correct reading. Find the distance between the 50 cm mark and the 51 cm mark if the scale is used at 10°C. Coefficient of linear expansion of steel is 1.1 × 10–5 °C–1.
A steel wire of cross-sectional area 0.5 mm2 is held between two fixed supports. If the wire is just taut at 20°C, determine the tension when the temperature falls to 0°C. Coefficient of linear expansion of steel is 1.2 × 10–5 °C–1 and its Young's modulus is 2.0 × 10–11 Nm–2.
In hot summer after a bath, the body’s __________.
‘An object contains more heat’- is it a right statement? If not why?
Define one mole.
Explain the meaning of heat and work with suitable examples.
Our normal body temperature is ______.
Two objects are said to be in thermal contact if they can exchange heat energy.
Heat given to a body that raises its temperature by 1°C is ______.
What is the dimensional formula of heat?
