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Which of the following is/are not always...

Which of the following is/are not always necessary to observe a shadow?

A

Sun

B

Screen

C

Source of light

D

Opaque object

Text Solution

Verified by Experts

The correct Answer is:
A
A sun is not always necessary for the creation of a shadow but curtain(screen), source of light an opaque object are always necessary.
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AGRAWAL EXAM CART BIHAR-REFLECTION OF LIGHT, MULTIPLE REFLECTION AND HUMAN EYE AND ITS CARE-JNV PREVIOUS YEAR (2007-2020) QUESTIONS
  1. If the object is 5 cm away from the plane mirror, the image formed by ...

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  2. How many times is a ray of light reflected by two plane mirrors placed...

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  3. Which of the following is/are not always necessary to observe a shadow...

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  4. The objects which partially allow light to pass through it are called ...

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  5. Which of the following can never form a circular shadow

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  6. Bouncing back of ray of light from shining surface on which it was inc...

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  7. In which medium the speed of the sound is maximum?

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  8. The blue colour of sky is due to :

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  9. Which lens is used to rectify myopia ?

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  10. Which of the following has maximum energy?

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  11. Due to which the air bubble seems to be sparkling in the water ?

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  12. A person effected by colour blindners feels problem to identify which ...

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  13. Choose the correct statement for making the images by plain mirror: ...

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  14. The human eye forms the image of an object at its

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  15. From the following which can convert an incident light from a point so...

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  16. Which mirror is used as a back mirror in motor vehicles ?

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  17. Which part of the donor's eye is transplanted in eye donation ?

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  18. In which of the following medium the speed of light is maximum ?

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  19. The vision range for a normal human eye is:

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  20. The stars twinkle in the sky because of:

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