# NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 679 - 685 of 1484

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## Question number: 679

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MCQ▾

### Question

The angle of elevation of a cloud from a point 120 m above a lake is and the angle of depression of its image in lake is . The height of the cloud is ________.

### Choices

Choice (4) Response

a.

448.77 m

b.

378.23 m

c.

293.67 m

d.

445.45 m

## Question number: 680

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MCQ▾

### Question

The mean and median for a unimodal data are 67,67.3 respectively then the mode is

### Choices

Choice (4) Response

a.

69.8

b.

67.9

c.

65.6

d.

71.2

## Question number: 681

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MCQ▾

### Question

A book containing 90 pages is opened at random. The probability that a doublet page is found is

### Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

## Question number: 682

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MCQ▾

### Question

The angle of depression of an object from a tower of height 90 m is . Then the distance of object from tower is ________.

### Choices

Choice (4) Response

a.

60 m

b.

15 m

c.

45 m

d.

30 m

## Question number: 683

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MCQ▾

### Question

1 - 10,11 - 20,21 - 30, are the classes. The lower limit of the class 21 - 30 is

### Choices

Choice (4) Response

a.

21

b.

30.5

c.

30

d.

20.5

## Question number: 684

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MCQ▾

### Question

LMNO is a trapezium in which . P & Q are the mid points of LO and MN. If PQ = 5 cm, ON = 8 cm, then LM = ________.

### Choices

Choice (4) Response

a.

9 cm

b.

6.5 cm

c.

8.5 cm

d.

13 cm

## Question number: 685

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MCQ▾

### Question

The distance of the point from the origin is

### Choices

Choice (4) Response

a.

units

b.

units

c.

units

d.

All of the above

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