set 6 MCQ Questions & Answers Detailed Explanation

Question : 1

Which one of the following statement is not correct?

a) In summer, white or light coloured clothes are preferred to dark coloured clothes generally

b) Concave mirrors are used in searchlights

c) Mirage is an optical illusion arising due to total internal reflection of light

d) Convex mirror with a small aperture is used by doctors to examine, ear, nose or throat of a patient

Question : 2

Assertion (A):
Radio waves bend in a magnetic field.
Reason (R):
Radio waves are electromagnetic in nature.
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

Question : 3

What temperature is the same on celsius scale as well as on Fahrenheit scale?

a) – 32°C

b) – 212°C

c) – 40°C

d) 32°C

Question : 4

FM broadcasting service uses the range of frequency bands between

a) 76-87 MHz

b) 54-75 MHz

c) 109-139 MHz

d) 88-108 MHz

Question : 5

Consider the following statements.

1. If magenta and yellow coloured circles intersect, the intersected area will have a red colour.
2. If cyan and magenta coloured circles intersect, the intersected area will have a blue colour.

a) Both 1 and 2

b) Only 2

c) Only 1

d) Neither 1 nor 2

Question : 6

The cloudy nights are warmer than clear nights because

a) Clouds absorb Sunlight during the day and radiate the same in night

b) Clouds make the atmosphere damp and generate heat

c) The clouds prevent radiation of heat from the ground and the air

d) The clouds obstruct the movement of air which creates heat