NSO Level 1- Science Olympiad (SOF) Class 10: Questions 904 - 907 of 986

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Question number: 904

» Light - Reflection and Refraction

Edit
MCQ▾

Question

A metallic rod falls under gravity with its ends pointing east and west. Then

Choices

Choice (4) Response

a.

An emf is induced in it cuts the magnetic lines of force

b.

Its acceleration is equal to the product of g and the radius of d ring

c.

No emf id induced at all

d.

Two emf’s of equal but opposite signs are induced giving not net emf

Question number: 905

» Metals and Non - Metals

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MCQ▾

Question

Read the given statements and mark the correct option.

Statement 1: Metals have low density

Statement 2: Non-metals are malleable and ductile.

Choices

Choice (4) Response

a.

Statements 1 and 2 are wrong.

b.

Only Statement 1 is true.

c.

Statements 1 and 2 are true.

d.

Only Statement 2 is true.

Question number: 906

» Magnetic Effects of Electric Current

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Match List-Ⅰ List-Ⅱ▾

Question

Match column I and column II and select the correct option from the codes given below.

List-Ⅰ (Column I) List-Ⅱ (Column II)

(A)

Galvanometer

(i)

Convert an AC generator into a DC generator

(B)

Generator

(ii)

Fleming left hand rule

(C)

Electric motor

(iii)

Detect the presence of a current in a circuit

(D)

Split ring commutator

(iv)

Fleming right hand rule

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (iii)
  • (i)
  • (ii)
  • (iv)

b.

  • (iii)
  • (iv)
  • (ii)
  • (i)

c.

  • (ii)
  • (i)
  • (iv)
  • (iii)

d.

  • (iv)
  • (iii)
  • (i)
  • (ii)

Question number: 907

» Light - Reflection and Refraction

Edit
MCQ▾

Question

For convex lens, when the object is in between the image formed is

Choices

Choice (4) Response

a.

Beyond

b.

Real and inverted

c.

Larger than object

d.

All a. , b. and c. are correct