Question # 1

If tube length of astronomical telescope is 105 cm and magnifying power is 20 for normal setting. Calculate the focal length of objective

Choose an answer

100 cm

10 cm

20 cm

25 cm

The essential distinction between X-rays andγ-rays is that

Choose an answer

γ-rays have smaller wavelength than X-rays

γ-rays emanate from nucleus while X-rays emanate from outer part of the atom

γ-rays have greater ionizing power than X-rays

γ-rays are more penetrating than X-rays

Who explained the origin of the Fraunhoffer lines?

Choose an answer

Fraunhoffer

Kirchhoff

Fresnel

Snell

Which of the following sources give discrete emission spectrum?

Choose an answer

Incandescent electric bulb

Sun

Mercury vapour lamp

Candle

A 50-volt battery is connected across 10-ohm resistor. The current is 4.5 A. The internal resistance of the battery is

Choose an answer

Zero

0.5 ohm

1.1 ohm

5.0 ohm

Which of the following is not thermo dynamical function?

Choose an answer

Enthalpy

Work done

Gibb's energy

Internal energy

A force of 10N is acting along y-axis. Its component along x-axis is

Choose an answer

10N

20N

100N

Zero N

The modulus of rigidity of a liquid is

Choose an answer

Zero

1

Infinity

A value not one of those mentioned above

If the period of oscillation of mass (M) suspended from a spring is 2s, then the period of mass 4M will be

Choose an answer

1 s

2 s

3 s

4 s

The sieman is the SI unit of

Choose an answer

Resistance

Specific Resistance

Conductance

Inductance

Energy is stored in the choke coil in the form of

Choose an answer

Heat

Magnetic energy

Electric energy

Electro-magnetic energy

Two forces are acting together on an object. The magnitude of their resultant is minimum when the angle between the force is

Choose an answer

0°

60°

120°

180°

When boron is added as an impurity to silicon, the resulting material is.

Choose an answer

n type conductor

n type semiconductor

p-type conductor

p-type semiconductor

The product of the pressure and volume of an ideal gas is

Choose an answer

A constant

Approximately equal to the universal gas constant

Directly proportional to its temperature

Inversely proportional to its temperature

A body of mass 2 kg is thrown up vertically with K.E. of 490 joules. If the acceleration due to gravity is 9.8 m/s², the height at which the K.E, of the body becomes half its original value is given by:

Choose an answer

50 m

12.5 m

25 m

10 m

For obtaining appreciable extension, the wire should be

Choose an answer

Short and thin

Long and thin

Short and thick

Long and thick

More Classes

Other Links

NAT II Physical Science Physics MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer