NSO Level 1- Science Olympiad (SOF) Class 10: Questions 601 - 604 of 986

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Question number: 601

» Light - Reflection and Refraction

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MCQ▾

Question

The optical phenomena, twinkling of stars, is due to

Choices

Choice (4) Response

a.

Atmospheric refraction

b.

Atmospheric reflection

c.

Total refraction

d.

Total reflection

Question number: 602

» Sources of Energy

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MCQ▾

Question

Choose correct option to explain limitations of solar cooker.

Choices

Choice (4) Response

a.

The direction of the reflector has to be adjusted according to the position of the sun

b.

Short life

c.

Need maintenance after some month

d.

It cannot be used for making ‘Tea’

Question number: 603

» Magnetic Effects of Electric Current

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MCQ▾

Question

A small conducting rod of length l, moves with a uniform velocity v in a uniform magnetic field B as shown in figure. The current will flow from

 Flemings right hand rule

Fleming’S Right Hand Rule

Fleming’s right hand rule

Choices

Choice (4) Response

a.

End X to End Y

b.

End Y to End X

c.

Question does not provide sufficient data or is vague

d.

All of the above

Question number: 604

» Light - Reflection and Refraction

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MCQ▾

Question

For concave mirror, object between P and F in following figure. Which type of image is formed?

Object between P and F in following figure

Object between P and F in Following Figure

Object between P and F in following figure

Choices

Choice (4) Response

a.

Behind the mirror, virtual and erect and larger than the object

b.

At infinity, real and inverted and highly magnified

c.

At the centre of curvature, real and inverted and same size as the object

d.

Beyond the centre of curvature, real and inverted and larger than the object