Physics Tnpsc interview questions

Whose experiments proved that the speed of light was always the same?

1. James Clark Maxwell
2. Miller and Stanley
3. Werner Heisenberg
4. Michelson and Morley

The device through which the intensity of the sunrays is measured

1. Actiometer
2. Astrometer
3. Barometer
4. Chrescograph

Who was the inventor of scooter?

1. Formich
2. Damlar
3. Brad Shaw
4. Einstein

The use of thermostat is

1. to keep constant temperature
2. to increase temperature
3. to measure temperature
4. to convert temperature into electricity

The maximum displacement of the bob from the mean position is called ____

1. amplitude
2. velocity
3. period of oscillation
4. length of the pendulum

The earth revolves round the Sun in

1. one year
2. one week
3. one solar day
4. one month

The time taken for one oscillation is called

1. period of oscillation
2. mass
3. second
4. minute

Width and thickness are basically the measure of

1. height
2. length
3. mass
4. speed

Heat is measured in terms of ___

1. cm
2. gram
3. calorie
4. degree

In the adiabatic process ____ remains constant.

1. volume
2. heat
3. temperature
4. pressure

To find the area of an irregular lamina, we use a

1. divider
2. stop watching
3. graph paper
4. measuring jar

Sea water is converted into potable of water by

1. filtration
2. electrolysis
3. reverse osmosis
4. primary treatment

Volume of water increases when it is cooled below

1. 100°C
2. 4°C
3. 40°C
4. 273°C

The gravimetric percentage composition of hydrogen and oxygen in water is

1. 1 : 2
2. 2: 1
3. 8 : 1
4. 11 : 11 : 88 : 89

Latent heat of vapourisation of water is

1. + 537 cal.
2. - 537 cal.
3. +79.7 cal.
4. -79.7 cal.

The frequency of ultrasound wave is typically

1. Below 02 kHz
2. Below 20 kHz
3. Above 20 kHz
4. Above 20,000 kHz

The time period of a pendulum watch

1. depends on the temperature
2. depends on the time
3. depends on the length
4. depends on the mass

Boiling point of water is ___

1. -39°C
2. 357°C
3. 100°C
4. 0°C

Charges escape readily from

1. sharp edges
2. circular edges
3. spherical edges
4. blunt edges

When we speak our ____ vibrates.

1. vocal cord
2. mouth
3. tongue
4. throat

In a plane mirror the angle of reflection is ___ the angle of incident.

1. parallel to
2. smaller than
3. equal to
4. larger than

The unit of frequency is

1. hz
2. m
3. kg
4. s

Unit of heat energy is

1. degree
2. joule
3. metre
4. kilogram

The geometric centre of the spherical surface of the mirror is called ___

1. radius of curvature
2. principal radius
3. pole
4. centre of curvature

Thermal expansion means expansion of bodies due to ___

1. friction
2. heat
3. magnetism
4. electric power

Pin hole camera is used ____

1. as a microscope
2. in automobiles
3. in submarines
4. in photographic camera

Convex lens is also called ____ lens.

1. Diverging
2. Convex
3. Refracting
4. Converging

Solar eclipse are formed ___

1. on all days
2. only on week days
3. on a new moon day
4. on a full moon day

Lunar eclipse occurs ___

1. on a new moon day
2. on a full moon day
3. once in a month
4. every day

The speed of light in air or vacuum is ___

1. 330 m/s
2. 3x108 m/s
3. 3x108 km/s
4. 3,00,000 m/s