Question # 1

If two bodies of equal masses moving in the same direction collide elastically, then their velocities.

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Are added

Are subtracted

Do not change

Are exchanged

The photocopying process is called:

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Geography

Sonography

Xerography

Zerography

None of these

The spectrum emitted from hydrogen filled discharge tube is:

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Line spectrum

Discrete spectrum

And spectrum

Absorption spectrum

Both (A) and (B)

Root out of the conventional source of energy:

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Energy from biomass

Hydroelectric energy

Geothermal energy

None of these

Amplitude in SHM is equivalent to ______ in circular motion:

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Diameter

Radius

Circumference

None of these

Which of the following is not thermo dynamical function?

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Enthalpy

Work done

Gibb's energy

Internal energy

Distance covered by a freely failing body n the first second of its motion will be:

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4.9 m

9.8 m

19.6 m

29.4 m

The SI unit of conductivity is

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ohm-m

ohm^-1m^-1

ohm-m^-1

ohm^-1m

One electron volt is equal to

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1.6 x 1019eV

6.25 x 1018 eV

1.6 x 1018 eV

6.25 x 1019eV

The results of mechanical tests are usually expressed in terms of

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stress

strain

stress and strain

neither strees nor strain

The henry is the unit for

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Resistance

Magnetic flux

Magnetic field

Inductance

Two row boats moving parallel in the same direction and pulled toward each other due to the application of Bernoulli's equation

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Stake's theorem

Toricelli's theorem

Venturi relation

None of these

A body is dropped from a tower reaches the earth surface in 4 sec where g is 10 m/s²the height of tower is

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80 m

20 m

160 m

40 m

The biological sciences deal with the

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Living things

Non-living things

Both

None of these

SI unit of work is

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N-m

N-m²

N-ms^-1

N-ms^-2

Solids having partially field conduction bands are

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Insulator

Semiconductor

Super conductor

Semi conductor

A student measured the diameter of a wire using a screw gauge with least count 0.001cm.The correct measurement is

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5.3 cm

5.32 cm

5.320 cm

5.3200 cm

The time rate of change of displacement is called

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Speed

Velocity

Acceleration

None of these

Recently a complex crystalline structure known as Yetrium Barium Copper Oxide have been reported to become superconductor at

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125 K

25 K

263 K

163 K

Which of the following is a scalar quantity?

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Displacement

Electric field

Acceleration

Work

Which of the following theory completely explain the three types of materials?

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Bohr model of electron distribution

Rutherford atomic model

Pauli's exclusion principle

energy band theory

8.233 m, 2:105 m and 1.05 cm are the length, breadth and thickness respectively. Find volume of the sheet correct upto appropriate significant digits

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8.25 × 10^-3 m³

7.15 × 10^-2 m³

7.85 × 10^-2 m³

None of these

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