The image formed by a plane mirror is MCQ with Answer and Explanation

Question Report Error

The image formed by a plane mirror is

A. Virtual and erect

B. Virtual and inverted

C. Real and inverted

D. Real and erect

Answer: Option A

Solution (By JKExamLibrary)

Plane mirror forms virtual, erect, same size, laterally inverted image behind mirror. Used in periscope, looking glass. Distance behind mirror equals object distance.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error

A car starts from rest and accelerates uniformly at 2 m/s² for 10 s. Distance covered in 10th second is

A. 20 m

B. 19 m

C. 2 m

D. 10 m

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Correct Answer: Option B

Explanation:
s_nth = u + (a/2)(2n-1) = 0 + (2/2)(20-1) = 19 m.

This question belongs to: Science Physics

Question #2 Report Error

The number of significant figures in 0.00450 is

A. 4

B. 5

C. 3

D. 2

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Correct Answer: Option C

Explanation:
Leading zeros not significant. '450' has three digits, but the trailing zero after decimal is significant (4,5,0). So 3 significant figures. 0.00450 is 3 SF.

This question belongs to: Science Physics

Question #3 Report Error

A wire of resistance 6 Ω is stretched to thrice its original length. New resistance is

A. 18 Ω

B. 54 Ω

C. 36 Ω

D. 2 Ω

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Correct Answer: Option B

Explanation:
R ∝ L² (volume constant). L'=3L => R' = 3² × 6 = 9×6 = 54 Ω. Generally, R' = n² R for stretching n times. Important concept.

This question belongs to: Science Physics

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