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 : 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

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

Assertion (A):
The handle of pressure cooker is made up of Abonite.
Reason (R):
Abonite is a hard material.
Code

a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

b) (A) is true, but (R) is false

c) Both (A) and (R) are true and (R) is the correct explanation of (A)

d) (A) is false, but (R) is true

Answer: (a)

Question : 2

The red colour of the Sun at Sunset and Sunrise is due to

a) Total internal reflection of light

b) Refraction of light

c) Scattering of light

d) Dispersion of light

Answer: (c)

Question : 3

Which of the following has the longest wavelength?

a) X-rays

b) Visible light

c) Infrared

d) Radio waves

Answer: (d)

Question : 4

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 : 5

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 : 6

The visible range of solar radiation is

a) 740-10000 nm

b) 400-700 nm

c) 100-400 nm

d) None of the above

Answer: (b)

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