The process of evaporation causes MCQ with Answer and Explanation

The process of evaporation causes
A. No temperature change
B. Boiling
C. Cooling
D. Heating
Answer: Option C
Solution (By JKSSB Mock Tests)
Evaporation absorbs latent heat from surroundings, cooling effect.

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Practice More Physics Questions

Question #1
What is the equivalent capacitance when three capacitors of 3 microfarads each are connected in series?
A. 9 microfarads
B. 1 microfarad
C. 0.33 microfarads
D. 3 microfarads

Correct Answer: Option B


Explanation:
The formula for capacitors in series is exactly the opposite of resistors. 1/C_eq = 1/C1 + 1/C2 + 1/C3. Here, all are 3 uF. So, 1/C_eq = 1/3 + 1/3 + 1/3 = 3/3 = 1. Therefore, C_eq = 1 microfarad. When identical capacitors are in series, you simply divide the capacitance by the number of capacitors (3/3 = 1).

This question belongs to: Science Physics
Question #2
One micron is equal to
A. 10⁻⁶ m
B. 10⁻⁹ m
C. 10⁻³ m
D. 10⁻¹⁰ m

Correct Answer: Option A


Explanation:
Micron or micrometer = 10⁻⁶ m.

This question belongs to: Science Physics
Question #3
The device that uses the principle of electromagnetic induction is
A. Transformer
B. Electric bulb
C. Electric motor
D. Resistor

Correct Answer: Option A


Explanation:
Transformer, generator, dynamo use electromagnetic induction (Faraday's law). Motor uses magnetic effect of current. Bulb uses heating effect. Resistor limits current. Induction: changing flux induces emf.

This question belongs to: Science Physics