NSO Level 1- Science Olympiad (SOF) Class 10: Questions 947 - 950 of 986

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Question number: 947

» Light - Reflection and Refraction

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MCQ▾

Question

Which of the following correctly depicts reflections in case of plane mirror inclined at

Choices

Choice (4) Response

a.

Reflections in case of plane mirror : Choice A

Reflections in Case of Plane Mirror: Choice A

Reflections in case of plane mirror

b.

Reflections in case of plane mirror : Choice B

Reflections in Case of Plane Mirror: Choice B

Reflections in case of plane mirror

c.

Reflections in case of plane mirror : Choice C

Reflections in Case of Plane Mirror: Choice C

Reflections in case of plane mirror

d.

Reflections in case of plane mirror : Choice D

Reflections in Case of Plane Mirror: Choice D

Reflections in case of plane mirror

Question number: 948

» Light - Reflection and Refraction

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MCQ▾

Question

The refracted ray will pass through the second focus for a convex lens, and appear to diverge from the first focus for a concave lens, this will happen when

Choices

Choice (4) Response

a.

When the incident light ray emerges from the first focus of a convex lens

b.

The incident light ray is parallel to the principal axis

c.

When the light ray passes through the optical centre of a lens

d.

None of the above

Question number: 949

» Magnetic Effects of Electric Current

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MCQ▾

Question

The strength of magnetic field inside a long current carrying straight solenoid is

Choices

Choice (4) Response

a.

Same at all points

b.

More at the ends than at the centre

c.

Minimum in the middle

d.

Found to increase from one end to the other

Question number: 950

» Chemical Reactions and Equation

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MCQ▾

Question

Figure shown the Heated the Calcium carbonate

Figure Shown the Heated the Calcium Carbonate

Heating the limestone (calcium carbonate) is showing in figure.

What will happen?

First reaction product is calcium oxide

Second products carbon dioxide gas

The reaction

Explosion will occur

Choices

Choice (4) Response

a.

(2), (3) and (4)

b.

(3), (4)

c.

(1), (2), (3) and (4)

d.

(1), (2) and (3)