set 3 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 : The visible range of solar radiation is

(a) 740-10000 nm

(b) 400-700 nm

(c) 100-400 nm

(d) None of the above

The correct answers to the above question in:

Answer: (b)

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

Question : 1

Which one of the following properties distinguishes ultrasound from normal audible sound?

a) Speed of propagation

b) Intensity

c) Frequency

d) Quality

Answer: (c)

Question : 2

Light appears to travel in a straight line because

a) The wavelength of light is very small

b) The velocity of light is very large

c) It consists of small particles

d) Light is reflected by the surroundings

Answer: (a)

Question : 3

If a tunnel is dug along the diameter of earth and a piece of stone is dropped into it, then the stone will

a) start oscillating about the centre of the earth

b) come out of the another end of the earth and will escape out in space

c) come to rest at the centre of the earth

d) stop at another end of the earth

Answer: (a)

Question : 4

A radio station broadcast at 30 metre band. The frequency of the carrier wave transmitted by this station is

a) 100 kHz

b) 10 MHz

c) 10 kHz

d) 100 MHz

Answer: (b)

Question : 5

If the length of second’s pendulum is increased by 2%, how many seconds will it lose per day?

a) 3456 s

b) 3600 s

c) 1728 s

d) 846 s

Answer: (d)

Question : 6

The mirror, which is used in searchlights, is

a) Simple mirror

b) Convex mirror

c) Concave mirror

d) None of the above

Answer: (c)

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