The thermometric liquid generally used in clinical thermometer is MCQ with Answer and Explanation

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The thermometric liquid generally used in clinical thermometer is

A. Alcohol

B. Mercury

C. Glycerine

D. Water

Answer: Option B

Solution (By JKSSB Mock Tests)

Mercury used due to uniform expansion, visibility, high boiling point.

This question belongs to: Science Physics

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Question #1

The frequency of alternating current in households in India is

A. 60 Hz

B. 100 Hz

C. 50 Hz

D. 0 Hz

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Correct Answer: Option C

Explanation:
50 Hz, 230 V.

This question belongs to: Science Physics

Question #2

Potentiometer sensitivity increased by:

A. Higher current

B. Thicker wire

C. Longer wire

D. Shorter wire

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Correct Answer: Option C

Explanation:
Longer wire ⇒ smaller potential gradient (V/cm) ⇒ finer voltage measurement ⇒ higher sensitivity. Memory tip: 'Sensitivity ∝ wire length; smaller gradient = better resolution'. Experimental physics concept frequently tested in competitive exams.

This question belongs to: Science Physics

Question #3

The angle of reflection is measured from

A. Reflected ray

B. Incident ray

C. Normal to the surface

D. Surface of mirror

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Correct Answer: Option C

Explanation:
Angle of incidence and reflection are measured with respect to the normal (perpendicular) at point of incidence. Not from surface. If angle from surface given, convert.

This question belongs to: Science Physics

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