set 1 MCQ Questions & Answers Detailed Explanation

MOST IMPORTANT general science mcq - 16 EXERCISES

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The following question based on light, heat, thermodynamics, wave motion, sound, optics & oscillations topic of general science mcq

Questions : When the distance between the object and the plane mirror increases

(a) the distance between the image and the plane mirror increases

(b) the image remains same

(c) the size of the image will become less than the size of the object

(d) the distance between the image and the plane mirror decreases

The correct answers to the above question in:

Answer: (a)

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Read more light heat thermodynamics wave sound optics oscillation Based General Science Questions and Answers

Question : 1

When pressure on piece of ice is increases its melting point

a) increases

b) decreases

c) remains unchanged

d) first increases and then decreases

Answer: (a)

Question : 2

The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. What is the reason ?

a) Since the surface of the lake is at the same temperature as the air, no heat is lost.

b) Ice is a bad conductor of heat.

c) The density of water is maximum at 4°C.

d) None of the statements (a), (b) and (c) given is correct.

Answer: (b)

Question : 3

A radar which detects the presence of an enemy aircraft uses

a) Sound waves

b) Radio waves

c) Light waves

d) Ultrasound waves

Answer: (b)

Question : 4

Power of accommodation of eye implies

a) change of focal length of eye lens

b) control intensity

c) prevent internal reflection of light

d) All of the above

Answer: (a)

Question : 5

In fibre optics communication, the signal travels in the form of

a) Micro wave

b) Radio wave

c) Light wave

d) Electric wave

Answer: (c)

Question : 6

Find out the odd colour from the following options.

a) Red

b) Brown

c) Green

d) Yellow

Answer: (b)

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