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The best laboratory approximation to an ...

The best laboratory approximation to an ideal black body is .

A

lump of charcoal heated to a high temperature

B

metal coated with a black dye

C

glass surface coated with coalter

D

hollow enclosure blackened inside and having a small hole

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The correct Answer is:
d
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 24-Paper 1 (Physics and Chemistry)
  1. A gas is found to obey the law p^(2)V = constant. The initial temperat...

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  2. In order to double the separation between the molecules (keeping tempe...

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  3. The best laboratory approximation to an ideal black body is .

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  4. IN a new system of units called star units, 1 kg* = 10 kg , 1m* = 1km ...

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  5. A horizontal platform with an object palced on it executes simple horm...

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  6. The currect voltage relation of diode is given by 1=(e^(1000 V//T)-1) ...

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  7. The periodic time T of a simple pendulum are observed , for different ...

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  8. If wavelength of a sound wave in a medium is reduced by 50% , then the...

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  9. A string is producing transverse vibration whose equation is y = 0.021...

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  10. An open U-tube contains mercury. When 11.2 cm of water is poured into ...

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  11. The velocity of sound in a gas is 300 m/s . The root mean square veloc...

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  12. A man is watching two trains, one leaving and the other coming in with...

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  13. A small spherical ball falling through a viscous medium of negligible ...

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  14. The force between the plates of a parrallel plate air capacitor , if c...

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  15. The paltes of a capacitor are separated by 5mm. A battery of 1 kV is c...

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  16. What are the advantages of a Wheatstone bridge method of measuring res...

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  17. Iron and silicon wires are heated form 30^(@)C to 50^(@)C. The correct...

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  18. Which of the following can cause the null point of a potentiometer to ...

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  19. A bus moving on a level road with a velocity v can be stopped at a dis...

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  20. A block of mass 2 kg is at rest on a floor . The coefficient of static...

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