Question # 1

In the equation if f₂ > then

Choose an answer

When platinum wire is heated, it changes to cherry red at temperature.

Choose an answer

500^oC

900^oC

1100^oC

1300^oC

Who explained the photo electric effect.

Choose an answer

Max Plank

Einstein

Henry

Rutherford

1 kg mass will be equivalent to energy.

Choose an answer

9 x 10⁸ J

9 X 10¹² J

9 X 10¹⁶ J

9 X 10¹⁹ J

The value of Stefan is constant is:

Choose an answer

4.57 x 10^-8 m²k²

5.67 x10^-8 wm^-2k^-4

6.67x 10^-11 wm²k⁴

7.45 x 10^-9 m² wk³

Internal frame is a frame is which

Choose an answer

1st law holds

2nd law holds

3rd law holds

Kelvin's law holds

Unit of Stephen's constant is

Choose an answer

W m K^-2

W m^-2 K^-4

W m K^-4

None

Which is the most refined form of matter.

Choose an answer

Smoke

Fog

Light

Electron

The dimensions of Plank's constant is same as that of.

Choose an answer

Energy

Power

Acceleration

Angular momentum

If an object moves with speed of light, its mass will be.

Choose an answer

Zero

Maximum

Minimum

infinity

Energy of Black body radiation depends upon

Choose an answer

Nature of surface of body

Nature of material of body

Shape and size of body

Temperature of the body

Photodiode is used for wave nature of.

Choose an answer

Light

Thermal radiation

Radi waves

Sound waves

The mass of an object will be doubled at speed.

Choose an answer

2.6 x 10⁸ m/s

1.6 x 10⁸m/s

2.6 x 10⁷m/s

3.6 x 10⁷ m/s

An electron miroscope emplys which to one of the following particles?

Choose an answer

Electron ahve a wave nature

Electrons can be focused by an electric field

Electrons can be focused by a magnetic field

All of the above

Albert Einstein got noble prize in:

Choose an answer

1926

1921

1918

1931

If the energy of photon is 10 eV and work function is 5 eV, then the a value of stopping potential will be

Choose an answer

50 V

2 V

5 V

15 V

The energy of photon is givne by

Choose an answer

mv2/2

hf

Va e

mac¹

More Classes

Other Links

Physics ICS Part 2 Chapter 19 Online MCQ's Test 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

Choose an answer