Question

SCIENCE UNIT 25: STARLIGHT

Toshio likes to look at stars . However, he cannot observe stars very well at night because he lives in a large city.

Last year toshio visited the countryside where he observed a large number of stars that he cannot see when he is in the city.

QUESTION 25.1 -
Why can many more stars be observed in the countryside than in large cities?
A. THE MOON IS BRIGHTER IN CITIES AND BLOCKS OUT THE LIGHT FROM MANY STARS.

B. THERE IS MORE DUST TO REFLECT LIGHT IN COUNTRY AIR THAN IN CITY AIR.

C. THE BRIGHTNESS OF CITY LIGHTS MAKES MANY STARS HARD TO SEE.

D. THE AIR IS WARMER IN CITIES DUE TO HEAT EMITTED BY CARS, MACHINERY AND HOUSES.

QUESTION 25.2 -

Toshio uses a telescope with a large diameter lens in order to observe stars of low brightness.
Why does using a telescope with a large diameter lens make it possible to observe stars of low brightness?
A. THE LARGER THE LENS THE MORE LIGHT IS COLLECTED.

B. THE LARGER THE LENS THE MORE IT MAGNIFIES.

C. LARGER LENSES ALLOW MORE OF THE SKY TO BE SEEN.

D. LARGER LENSES CAN DETECT THE DARK COLOURS IN STARS.


it's very very urgent
don't think it's too big and long
please help me in this question
please​

Answer 1

Answer 1-

C. The brightness of city lights makes many stars hard to see.

Answer 2-

A. The larger the lens the more light is collected.

I hope it helps!

Answer 2

Explanation:

यूपी बड़ी है आज के जुदाई आज दे चढ़ाई चौधरी