Why stars look more in west than east?

The four largest planets of the solar system in descending order are__________.

Which planet is known as ‘Morning Star’?

Rotational axis of which of the following planet is highly tilted?

The darkest part of the shadow during eclipse is

Which of these is a dwarf planet?

Which of the following results in diffused reflection?

The nature of image formed by plane mirror is__________.

If you hold a pen in your right hand and stand in front of the mirror, the pen will be in the left hand in the image. This phenomenon is called ____________

If two plane mirrors are inclined at an angle of 40°, number of images formed will be_______.

Two mirrors A and B are placed at right angles to each other. A ray of light incident on mirror A at an angle of 25° falls on mirror B after reflection. The angle of reflection for the ray reflected from mirror B would be _______.

A toy is placed at 10 cm in front of a plane mirror. What is the distance of image from the mirror?

Which of the following works on the concept of multiple reflections?

We can see ourselves in a mirror or a polished surface but not on walls because of__________.

Sound can travel through _________

Which of the following statements are correct?

(i) Sound is produced by vibrations.

(ii) Sound requires a medium for propagation.

(iii) Light and sound both require a medium for propagation.

(iv) Sound travels slower than light.

The loudness of sound is measured in units of

Lightning can be seen as the moment it occurs. Pahi observes lightning in her area. She hears the sound 5 s after she observed lightning. How far is she from the place where lightning occurs? (speed of sound = 330 m/s).